Bjørn Helge Hjertager

Professor em.

Bjørn Helge Hjertager
51831807
46790916
Det teknisk-naturvitenskapelige fakultet
Institutt for maskin, bygg og materialteknologi
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Bio

Hjertager's background is Process/Chemical Engineering, Fluid Mechanics and Transport Processes with research area related to Industrial Fluid Flow Processes, both computational and experimental studies. His research the last 15-25 years has been directed towards the following areas:

- Industrial and Environmental Flows

- Multiphase Chemical Reactors

- Chemical Reactions in Turbulent Flows

- Combustion Hazards

UNDERVISNING

FORSKNINGSOMRÅDER

 - Industrial and Environmental Flows

- Multiphase Chemical Reactors

- Chemical Reactions in Turbulent Flows

- Combustion Hazards

 

UTVALGTE PUBLIKASJONER

Most recent 

https://scholar.google.com/citations?hl=no&user=zP761fsAAAAJ&view_op=list_works&sortby=pubdate

Most referenced

 https://scholar.google.com/citations?hl=no&user=zP761fsAAAAJ&view_op=list_works

ARBEIDSERFARING

Born: In Bergen, Norway, 1947

Education

1968 Ingeniør (BSc), Bergen College of Engineering (Mechanical Eng.), Norway

1972 Sivilingeniør (MSc), University of Trondheim, Norwegian Inst. of Technology (NTH); (Mechanical/Process Eng.), Norway

1979 Dr.Ing. (PhD), University of Trondheim, Norwegian Inst. of Technology (NTH); Norway, (Combustion, Heat Transfer and Fluid Flow)

Experience

1973 Soot formation and combustion, NTH

1974-1975 Modelling of turbulent flows, NTH

1976-1978 Three dimensional flows, NTH

1979 Underwater technology, Norwegian Underwater Inst. (NUI),Norway

1980-1988 Gas explosion research, Chr. Michelsen Inst.(CMI), Norway

1984-1988 Multiphase flows, CMI

1989-1997 Combustion hazards analysis, Telemark Inst. of Technology (HiT-TF) and Telemark Technological R&D Centre (Tel-Tek), Norway

 1989-1997 Industrial fluid flow processes, HiT-TF/Tel-Tek

1997- 2008 Chemical process engineering/ Chemical fluid flow processes, Aalborg University Esbjerg (AAUE), Denmark

 2008 - present Computational fluid dynamics, University of Stavanger (UiS)

 

Positions held

1973 Scientific assistant, NTH

1974-1975 University scholarship holder, NTH

1976-1978 Assistant professor, NTH

1979 Head of dept. for Technological R&D, NUI

1980-1983 Senior scientist, CMI

1980-1987 Head of Gas explosion research program, CMI

1987-1988 Head of Multiphase flow research program, CMI

1984-1988 Research Manager, CMI

1989-1997 Professor Industrial mathematics/ Process engineering, HiT-TF

1989-1997 Research Director II, Tel-Tek

1993-1995 Head of Process Technology Department (IPT), HiT-TF

1997- 2001 Senior Adviser II, Tel-Tek

2002 - present General Manager, EXSIM Consultants AS

1997 - 2008  Professor Chemical process engineering, AAUE

2008 - 2012 Head of Department and Professor, UiS

 2012- 2017 Professor Fluid dynamics and Vice-Dean for research, UiS

 2017- 2019 Professor Fluid dynamics, UiS

 2019 - present Professor Emeritus Fluid dynamics, UiS

  

Prof. Hjertager has published over 150 papers at international conferences and in international journals on fluid flow, heat transfer, combustion, gas explosions and chemical reactors. In addition he has authored and co-authored over 75 reports during his affiliation with NTH, NUI, CMI, HiT-TF/Tel-Tek, AAUE and UiS.

He has Professor competence in the following areas: Engineering Thermodynamics, NTH, 1984; Fluid Mechanics, Technical University of Denmark (DTH), 1987; Process Engineering, Telemark Institute of Technology (HiT-TF), 1988; Industrial Mathematics (Modeling and simulation), HiT-TF, 1988 and Chemical Process Engineering, AAUE, 1996.

He has been adviser to Royal Norwegian Council for Scientific and Industrial Research, NTNF's, committees on 1) Multiphase flow transport and 2) Explosions and Fires and he was member in the permanent Commission for Diving accidents set up by the Royal Norwegian Ministry of Justice. He has been Board member of DANSIS - the Danish Society for Industrial Fluid Mechanics as well as co-Board member in CAS - Centre for Advanced Studies. He has also been appointed "assessor" for the Australian Research Council (ARC), "evaluator" for the EU commission and for the Research Council of Norway as well as "reviewer" for Science & Engineering Research Council (SERC) in Singapore.

He has been member of numerous doctoral committees in Norway, England, Sweden, Denmark, The Netherlands, Finland, Spain and Australia and he has supervised 21 successful Dr.Ing./PhD candidates in Norway and Denmark. He has also participated in numerous evaluation committees for applicants for professorships at Universities in Norway, Denmark and Sweden.

He has been reviewer for many international conferences and international journals, including the bi-annual Int. Symposia on Combustion, Int. J. for Multiphase Flow, Chemical Engineering Science, Combustion Science and technology, Int. J. for Heat and Mass Transfer, Powder Technology, Industrial & Engineering Chemistry Research, Chemical Engineering Communications, AIChE Journal, Process Safety and Environmental Protection, Int. J. of Chemical Reactor Engineering, International Conference on Multiphase Flow (ICMF), Computers and Fluids, Reviews in Chemical Engineering, Revista Ingeniería e Investigación, Journal of Offshore Mechanics and Arctic Engineering, Aircraft Engineering and Aerospace Technology, Energies, Mathematical Problems in Engineering, Journal of Chemical Technology & Biotechnology, ACTA POLYTECHNICA - Journal of Advanced Engineering, Journal of Chemistry, Mineralss, Applied Sciences, Symmetry, Chemical Engineering Research and Design (CHERD).

He has also consulted for numerous industrial companies in Europe as well as in Australia and the USA.

Publikasjoner
Tilbake
  • Vitenskapelige publikasjoner

    • Hågbo, Trond-Ola; Giljarhus, Knut Erik Teigen; Hjertager, Bjørn H

      (2021)

      Influence of geometry acquisition method on pedestrian wind simulations.

      Journal of Wind Engineering and Industrial Aerodynamics.

      ISSN 0167-6105.

      Volum 215.

      DOI: 10.1016/j.jweia.2021.104665

    • Hågbo, Trond-Ola; Giljarhus, Knut Erik Teigen; Qu, Sen; Hjertager, Bjørn H

      (2019)

      The performance of structured and unstructured grids on wind simulations around a high-rise building.

      IOP Conference Series: Materials Science and Engineering.

      ISSN 1757-8981.

      Volum 700.

      Hefte 1.

      DOI: 10.1088/1757-899X/700/1/012001

    • Li, Yuzhu; Ong, Muk Chen; Gudmestad, Ove Tobias; Hjertager, Bjørn H

      (2019)

      The effects of slab geometries and wave directions on the steep wave-induced soil response and liquefaction around gravity-based offshore foundations.

      Ships and Offshore Structures.

      ISSN 1744-5302.

      DOI: 10.1080/17445302.2019.1690736

    • Li, Yuzhu; Ong, Muk Chen; Gudmestad, Ove Tobias; Hjertager, Bjørn H

      (2018)

      Numerical Analysis of Steep Wave-Induced Seabed Response and Liquefaction Around Gravity-Based Offshore Foundations. I: ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering - Volume 1: Offshore Technology - .

      The American Society of Mechanical Engineers (ASME).

      ISBN 978-0-7918-5120-3.

      DOI: 10.1115/OMAE2018-77046

    • Hjertager, Bjørn H

      (2017)

      Multi-fluid CFD analysis in Process Engineering.

      IOP Conference Series: Materials Science and Engineering.

      ISSN 1757-8981.

      Volum 276.

      Hefte 1.

      s.1-22.

      DOI: 10.1088/1757-899X/276/1/012010

    • Riva, Lorenzo; Teigen, Knut Erik; Hjertager, Bjørn H; Kalvig, Siri Margrethe

      (2017)

      Implementation and application of the actuator line model by OpenFOAM for vertical axis wind turbine.

      IOP Conference Series: Materials Science and Engineering.

      ISSN 1757-8981.

      Volum 276.

      Hefte 1.

      DOI: 10.1088/1757-899X/276/1/012002

    • Rege, Kristen; Hjertager, Bjørn H

      (2017)

      Application of Foam-extend on Turbulent Fluid-Structure Interaction.

      IOP Conference Series: Materials Science and Engineering.

      ISSN 1757-8981.

      Volum 276.

      Hefte 1.

      s.1-19.

      DOI: 10.1088/1757-899X/276/1/012031

    • Rian, Kjell Erik; Evanger, Trond; Vembe, Bjørn Erling; Lilleheie, Nils Inge; Lakså, Brynjar; Hjertager, Bjørn H; Magnussen, Bjørn F.

      (2016)

      Coherent computational analysis of large-scale explosions and fires in complex geometries - from combustion science to a safer oil and gas industry.

      Chemical Engineering Transactions.

      ISSN 1974-9791.

      Volum 48.

      s.175-180.

      DOI: 10.3303/CET1648030

    • Kalvig, Siri M.; Manger, Eirik; Hjertager, Bjørn H; Jakobsen, Jasna Bogunovic

      (2014)

      Wave Influenced Wind and the Effect on Offshore Wind Turbine Performance.

      Energy Procedia.

      ISSN 1876-6102.

      Volum 53.

      s.202-213.

      DOI: 10.1016/j.egypro.2014.07.229

    • Kalvig, Siri M.; Manger, Eirik; Hjertager, Bjørn H

      (2014)

      Comparing different CFD wind turbine modelling approaches with wind tunnel measurements.

      Journal of Physics: Conference Series (JPCS).

      ISSN 1742-6588.

      Volum 555.

      DOI: 10.1088/1742-6596/555/1/012056

    • Hjertager Osenbroch, Lene; Hjertager, Bjørn Helge; Solberg, Tron

      (2008)

      Experimental and Computational Studies of Turbulent Mass Transfer in a Mixing Channel.

      International journal of Chemical Reactor Engineering.

      ISSN 1542-6580.

      Volum 6.

    • Hjertager, Bjørn H; Solberg, Tron; Hansen, KG

      (2007)

      Reactive gas solids flow in circulating fluidised beds.

      Progress in Computational Fluid Dynamics, An International Journal (CFD).

      ISSN 1468-4349.

      Volum 7.

      Hefte 2.

    • Osenbroch, LKH; Hjertager, Bjørn H; Solberg, Tron

      (2005)

      Experiments and CFD modelling of fast chemical reaction in turbulent liquid flows.

      International journal of Chemical Reactor Engineering.

      ISSN 1542-6580.

      Volum 3.

      Hefte 3.

    • Bove, Stefano; Solberg, Tron; Hjertager, Bjørn H

      (2005)

      A novel algoritmn for solving population balance equations: the parallel parent and daugther cklasses. Derivation and testing.

      Chemical Engineering Science (CES).

      ISSN 0009-2509.

      Volum 60.

      Hefte 5.

      s.1449-1464.

    • Bove, Stefano; Solberg, Tron; Hjertager, Bjørn H

      (2004)

      Numerical aspects of bubble column simulations.

      International journal of Chemical Reactor Engineering.

      ISSN 1542-6580.

      Volum 2.

      Hefte 1.

    • Hjertager, Bjørn H; Solberg, Tron; Ibsen, CH; Hansen, KG

      (2004)

      Multi-fluid CFD modelling of fluidised bed reactors.

      International journal of Chemical Reactor Engineering.

      ISSN 1542-6580.

      Volum 2.

      Hefte 1.

    • Ibsen, CH; Helland, Eyvind; Hjertager, Bjørn H; Solberg, Tron; Tadrist, L; Ocelli, R

      (2004)

      Comparison of multifluid and discrete particle modelling in numerical predictions of gas particle flows in circulating fluidized beds.

      Powder Technology.

      ISSN 0032-5910.

      Volum 149.

      Hefte 1.

      s.29-41.

    • Hansen, KG; Solberg, Tron; Hjertager, Bjørn H

      (2004)

      A three-dimensional simulation of gas/particle flow and ozone decomposition in the riser of a circulating fluidized bed.

      Chemical Engineering Science (CES).

      ISSN 0009-2509.

      Volum 59.

      Hefte 22.

      s.5217-5224.

    • Osenbroch, LKH; Hjertager, Bjørn H; Deen, Niels; Solberg, Tron

      (2003)

      Measurement of turbulent mixing in a confined wake flow using combined PIV and PLIF.

      Canadian Journal of Chemical Engineering.

      ISSN 0008-4034.

      Volum 81.

      Hefte 6.

      s.1149-1158.

    • Hansen, KG; Ibsen, CH; Solberg, Tron; Hjertager, Bjørn H

      (2003)

      Eulerian/Eulerian CFD simulation of a cold flowing FCC riser.

      International journal of Chemical Reactor Engineering.

      ISSN 1542-6580.

    • Ibsen, CH; Onofri, F; Solberg, Tron; Hjertager, Bjørn H; Tadrist, L

      (2003)

      Improved particle image velocimetry measurements in gas-particle flows with a dense wall layer.

      Measurement Science and Technology.

      ISSN 0957-0233.

      Volum 14.

      Hefte 4.

    • Osenbroch, LKH; Hjertager, Bjørn H; Solberg, Tron

      (2003)

      CFD modelling of turbulent mixing in a confined wake flow.

      Annual meeting - American Institute of Chemical Engineers.

      ISSN 0196-7282.

    • Deen, Niels; Solberg, Tron; Hjertager, Bjørn H

      (2002)

      Flow generated by an aerated Rushton impeller: Two-phase PIV experiments and numerical simulations.

      Canadian Journal of Chemical Engineering.

      ISSN 0008-4034.

      Volum 80.

      Hefte 4.

      s.638-652.

    • Osenbroch, LKH; Hjertager, Bjørn H; Solberg, Tron

      (2002)

      CFD modelling of fast chemical reactions in turbulent liquid flows.

      Computers and Chemical Engineering.

      ISSN 0098-1354.

      Volum 26.

      Hefte 4.

      s.507-515.

    • Naamansen, Peter; Baraldi, D; Hjertager, Bjørn H; Solberg, Tron; Cant, S

      (2002)

      Solution adaptive CFD simulation of premixed flame propagation over various solid obstructions.

      Journal of Loss Prevention in the Process Industries.

      ISSN 0950-4230.

      Volum 15.

      Hefte 3.

      s.189-197.

    • Ibsen, CH; Solberg, Tron; Hjertager, Bjørn H; Johnsson, Filip

      (2002)

      Laser Doppler anamometry measurementsin a circulating fluidized bed of metal particles.

      Experimental Thermal and Fluid Science.

      ISSN 0894-1777.

      Volum 26.

      Hefte 6.

      s.851-859.

    • Deen, Niels; Hjertager, Bjørn H

      (2002)

      Particle image velocimetry measurements in an aerated stirred tank.

      Chemical Engineering Communications.

      ISSN 0098-6445.

      Volum 189.

      Hefte 9.

      s.1208-1221.

    • Enfors, SO; Jahic, Mirza; Xu, B; Hjertager, Bjørn H; Friberg, P

      (2001)

      Physiological responses to mixing in large scale bioreactors.

      Journal of Biotechnology.

      ISSN 0168-1656.

      Volum 85.

      Hefte 2.

      s.175-185.

    • Ibsen, CH; Solberg, Tron; Hjertager, Bjørn H

      (2001)

      Evaluation of a three-dimensional numerical model of scaled circulating fluidized bed.

      Industrial & Engineering Chemistry Research.

      ISSN 0888-5885.

      Volum 40.

      Hefte 23.

      s.5081-5086.

    • Deen, Niels; Solberg, Tron; Hjertager, Bjørn H

      (2001)

      Large eddy simulation of the gas-liquid flow in a square-sectioned bubble column.

      Chemical Engineering Science (CES).

      ISSN 0009-2509.

      Volum 56.

      Hefte 21.

      s.6341-6349.

    • Høiseth, Stian; Hjertager, Bjørn H; Solberg, Tron; Malo, Kjell A.

      (2000)

      Flixborough revisited - an explosion simulation approach.

      Journal of Hazardous Materials.

      ISSN 0304-3894.

      Volum 77.

      Hefte 1.

      s.1-9.

    • Mathiesen, Vidar; Solberg, Tron; Hjertager, Bjørn helge

      (2000)

      An experimental and computational study of multiphase flow behavior in a circulating fluidized bed.

      International Journal of Multiphase Flow.

      ISSN 0301-9322.

      Volum 26.

      s.387-419.

    • Mathiesen, Vidar; Solberg, tron; Hjertager, Bjørn Helge

      (2000)

      Predictions of gas/particle flow with an Eulerian model including a realistic particle size distribution.

      Powder Technology.

      ISSN 0032-5910.

      Volum 112.

      s.34-45.

    • Deen, Niels; Hjertager, Bjørn H

      (1999)

      Multiphase particle image velocimetry in an aerated stirred tank.

      Annual meeting - American Institute of Chemical Engineers.

      ISSN 0196-7282.

    • Mathiesen, Vidar; Solberg, Tron; Arastoopour, Hamid; Hjertager, Bjørn Helge

      (1999)

      Experimental and computational study of multiphase gas/particle flow in a CBF.

      AIChE Journal.

      ISSN 0001-1541.

      Volum 45.

      Hefte 12.

      s.2503-2518.

    • Hjertager, Bjørn Helge; Mathiesen, Vidar; Solberg, Tron

      (1999)

      Computational analysis of some fluidized systems.

      AIChE Symposium Series.

      ISSN 0065-8812.

      Volum 95.

      Hefte 321.

      s.1-6.

    • Høiseth, Stian; Hjertager, Bjørn H; Solberg, Tron; Malo, Kjell Arne

      (1998)

      Properties of simulated gas explosions of interest to the structural design process.

      Process safety progress.

      ISSN 1066-8527.

      Volum 17.

      Hefte 4.

      s.278-287.

    • Høiset, Stian; Hjertager, Bjørn Helge; Solberg, Tron; Malo, K.A.

      (1998)

      Properties of simulated gas explosions of interest to the structural design process.

      Process safety progress.

      ISSN 1066-8527.

      Volum 17.

      Hefte 4.

      s.278-287.

    • Hjertager, Bjørn Helge

      (1998)

      Computational fluid dynamics (CFD) analysis of multiphase chemical reactors.

      ?.

      Volum 4.

      s.45-92.

    • Hjertager, Bjørn H

      (1997)

      Process modelling of chemical reactors: Zero versus multidimensional models.

      MIC Journal: Modeling, Identification and Control.

      ISSN 0332-7353.

      Volum 18.

      Hefte 1.

      s.19-59.

    • Høiseth, Stian; Hjertager, Bjørn H; Solberg, Tron; Malo, KA

      (1997)

      Statistical estimation of loads from gasd explosions.

      Journal of Loss Prevention in the Process Industries.

      ISSN 0950-4230.

      Volum 10.

      Hefte 4.

      s.271-283.

    • Høiset, Stian; Hjertager, Bjørn Helge; Solberg, Tron; Malo, Kjell A.

      (1997)

      Statistical estimation of loads from gas explosions.

      Journal of Loss Prevention in the Process Industries.

      ISSN 0950-4230.

      Volum 10.

      Hefte 4.

      s.271-283.

    • Høiset, Stian; Hjertager, Bjørn Helge; Solberg, Tron; Malo, Kjell A.

      (1997)

      Statistical estimation of loads from gas explosions.

      Journal of Loss Prevention in the Process Industries.

      ISSN 0950-4230.

      Volum 10.

      Hefte 4.

      s.271-283.

    • Morud, Karin; Hjertager, Bjørn H

      (1996)

      LDA measurements and CFD modelling of gas-liquid flow in a stirred vessel.

      Chemical Engineering Science (CES).

      ISSN 0009-2509.

      Volum 51.

      Hefte 2.

      s.233-249.

    • Popat, N.R.; Hjertager, Bjørn Helge; Catlin, C.A.; Arntzen, B.J.; Solberg, Tron; Sæter, O.; Lindstedt, R.P.; Berg, A.C. van den

      (1996)

      Investigations to improve and assess the accuracy of computational fluid dynamic (CFD) based explosion models.

      Journal of Hazardous Materials.

      ISSN 0304-3894.

      Volum 45.

      s.1-25.

    • Samuelsberg, A.; Hjertager, Bjørn Helge

      (1996)

      Computational modelling of gas/particle flow in a riser.

      AIChE Journal.

      ISSN 0001-1541.

      Volum 42.

      Hefte 6.

      s.1536-1546.

    • Samuelsberg, A.; Hjertager, Bjørn Helge

      (1996)

      An experimental and numerical study of flow patterns in a circulating fluidized bed reactor.

      International Journal of Multiphase Flow.

      ISSN 0301-9322.

      Volum 22.

      Hefte 3.

      s.575-591.

    • Hjertager, Bjørn H; Morud, Karin

      (1995)

      Computational fluid dynamics simulation of bioreactors.

      MIC Journal: Modeling, Identification and Control.

      ISSN 0332-7353.

      Volum 16.

      Hefte 4.

      s.177-191.

    • Manger, Eirik; Solberg, Tron; Hjertager, Bjørn H; Vareide, Dag

      (1995)

      Numerical simulation of the ticking hourglass.

      International Journal of Multiphase Flow.

      ISSN 0301-9322.

      Volum 21.

      Hefte 4.

      s.561-567.

    • Samuelsberg, Arild E.; Hjertager, Bjørn H

      (1995)

      Simulation of two-phas gas/particle flow and ozone decomposition in a 0.25 ID riser. I: Advances in Multiphase Flow.

      Elsevier.

      ISBN 0-444-81811-1.

      s.679-688.

    • Hjertager, Bjørn H

      (1993)

      Computer modelling of turbulent gas explosions in complex 2D and 3D geometries.

      Journal of Hazardous Materials.

      ISSN 0304-3894.

      Volum 34.

      Hefte 2.

      s.173-197.

    • Hjertager, Bjørn H; Morud, Karin

      (1993)

      Computational Fluid Dynamics Simulation of Bioreactors. I: Bioreactor Performance - Proceedings.

      ISBN 91-630-1880-2.

      s.47-61.

    • Noorman, HJ; Hjertager, Bjørn H; Morud, Karin; Tradgardh, C; Enfors, SO; Larsson, Gen; Tørnquist, M

      (1993)

      Measurement and Computational Fluid Dynamics simulation of Saccharomyces cerevisiae production in a 30m3 stirred tank reactor. I: Bioreactor Performance - Proceedings.

      ISBN 91-630-1880-2.

      s.243-259.

    • Hjertager, Bjørn H; Solberg, Tron; Nymoen, KO

      (1992)

      Computer modelling of gas explosion propagation in offshore modules.

      Journal of Loss Prevention in the Process Industries.

      ISSN 0950-4230.

      Volum 5.

      Hefte 3.

      s.165-174.

    • Samuelsberg, Arild E.; Hjertager, Bjørn H

      (1992)

      Computational simulation of flow processes in fluidized bed reactors.

      Kona : Powder and Particle.

      ISSN 0288-4534.

      Volum 10.

      s.96-103.

    • Hjertager, Bjørn H

      (1991)

      Explosions in offshore modules.

      Process Safety and Environmental Protection (PSEP).

      ISSN 0957-5820.

      Volum 69.

      s.59-66.

    • Hjertager, Bjørn H

      (1989)

      Simulation of gas explosions.

      MIC Journal: Modeling, Identification and Control.

      ISSN 0332-7353.

      Volum 10.

      Hefte 4.

      s.227-247.

    • Moen, IO; Bjerketvedt, Dag; Engebretsen, T.; Jenssen, A.; Hjertager, Bjørn H; Bakke, JR

      (1989)

      Transition to detonation in a flame jet.

      Combustion and Flame.

      ISSN 0010-2180.

      Volum 75.

      Hefte 3-4.

      s.297-308.

    • Moen, IO; Sulmistras, A.; Hjertager, Bjørn H; Bakke, JR

      (1988)

      Turbulent flame propagation and transition to detonation in large fuel-air clouds.

      Proceedings of the Combustion Institute.

      ISSN 1540-7489.

      Volum 21.

      Hefte 1.

      s.1617-1627.

    • Hjertager, Bjørn H; Fuhre, K; Bjørkhaug, Magne

      (1988)

      Gas explosion experiments in 1:33 and 1:5 scale offshore separator and compressor modules using stoiciometetric homogeneous fuel-air clouds.

      Journal of Loss Prevention in the Process Industries.

      ISSN 0950-4230.

      Volum 1.

      Hefte 4.

      s.197-205.

    • Hjertager, Bjørn H; Fuhre, K; Bjørkhaug, Magne

      (1988)

      Concentration effects on flame acceleration by obstacles in large-scale methane-air and propane-air explosions.

      Combustion Science and Technology.

      ISSN 0010-2202.

      Volum 64.

      Hefte 4-6.

      s.239-256.

    • Hjertager, Bjørn H; Bjørkhaug, Magne; Fuhre, K

      (1988)

      Explosion propagation of non-homogeneous methane-air clouds inside an obstructed 50m3 vented vessel.

      Journal of Hazardous Materials.

      ISSN 0304-3894.

      Volum 19.

      Hefte 2.

      s.139-153.

    • Bakke, JR; Hjertager, Bjørn H

      (1987)

      The effect of explosion venting in empty vessels.

      International Journal for Numerical Methods in Engineering.

      ISSN 0029-5981.

      Volum 24.

      Hefte 1.

      s.129-140.

    • Hjertager, Bjørn H

      (1986)

      Three-dimensional modeling of flow, heat transfer and combustion. I: Handbook of Heat and Mass Transfer, Vol. 1: Heat Transfer Operations.

      CRC Press.

      ISBN 978-0872014114.

      s.1303-1350.

    • Hjertager, Bjørn H

      (1984)

      Computer simulation of turbulent reactive gas dynamics.

      MIC Journal: Modeling, Identification and Control.

      ISSN 0332-7353.

      Volum 5.

      Hefte 4.

      s.211-236.

    • Hjertager, Bjørn H

      (1984)

      Influence of turbulence on gas explosions.

      Journal of Hazardous Materials.

      ISSN 0304-3894.

      Volum 9.

      Hefte 3.

      s.315-346.

    • Hjertager, Bjørn H; Magnussen, Bjørn F.

      (1982)

      Computer simulation of flow, heat transfer and combustion in three-dimensional furnaces.

      Physicochemical hydrodynamics : PCH.

      ISSN 0191-9059.

      Volum 3.

      Hefte 3-4.

      s.231-250.

    • Hjertager, Bjørn H

      (1982)

      Simulation of transient compressible turbulent reactive flows.

      Combustion Science and Technology.

      ISSN 0010-2202.

      Volum 27.

      Hefte 5-6.

      s.159-170.

    • Thibault, P; Liu, YK; Chan, C; Lee, JHS; knystautas, r; Gurao, C; Hjertager, Bjørn H

      (1982)

      Transmission of an explosion through an orifice.

      Proceedings of the Combustion Institute.

      ISSN 1540-7489.

      Volum 19.

      Hefte 1.

      s.599-606.

    • Moen, Ingar; Lee, JHS; Hjertager, Bjørn H; Fuhre, K; Eckhoff, Rolf Kristian

      (1982)

      Pressure development due to turbulent flame propagation in large-scale methane-air explosions.

      Combustion and Flame.

      ISSN 0010-2180.

      Volum 47.

      s.31-52.

    • Hjertager, Bjørn H; Magnussen, Bjørn F.

      (1981)

      Laser doppler velocity measurements in the three-dimensional flow of a jet in a square enclosure.

      International Communications in Heat and Mass Transfer.

      ISSN 0735-1933.

      Volum 8.

      Hefte 3.

      s.171-186.

    • Hjertager, Bjørn H; Magnussen, Bjørn F.

      (1981)

      Calculation of turbulent three-dimensional jet induced flow in rectangular enclosures.

      Computers & Fluids.

      ISSN 0045-7930.

      Volum 9.

      Hefte 4.

      s.395-407.

    • Magnussen, Bjørn F.; Hjertager, Bjørn H; Olsen, J G; Bhaduri, D

      (1979)

      Effects of turbulent structure and local concentrations on soot formation and combustion in a C2H2 diffusion flame.

      Proceedings of the Combustion Institute.

      ISSN 1540-7489.

      Volum 17.

      Hefte 1.

      s.1383-1393.

    • Magnussen, Bjørn F.; Hjertager, Bjørn H

      (1977)

      On mathematical modeling of turbulent combustion with special emphasis on soot formation and combustion.

      Proceedings of the Combustion Institute.

      ISSN 1540-7489.

      Volum 16.

      Hefte 1.

      s.719-729.

      DOI: 10.1016/S0082-0784(77)80366-4

  • Bøker og kapitler

    • Hjertager, Bjørn H

      (2021)

      Engineering Fluid Dynamics 2019–2020 Volume 1.

      MDPI.

      ISBN 978-3-0365-0214-4.

      Hefte Special Issue.

    • Hjertager, Bjørn H

      (2021)

      Engineering Fluid Dynamics 2019–2020 Volume 2.

      MDPI.

      ISBN 978-3-0365-0250-2.

      Hefte Special Issue.

    • Hjertager, Bjørn H

      (2020)

      Engineering fluid dynamics 2018.

      ISBN 9783039281121.

      Hefte Special issue.

    • Hjertager, Bjørn H

      (2018)

      Engineering Fluid Dynamics.

      MDPI.

      ISBN 978-3-03842-668-4.

    • Hjertager, Bjørn H

      (2015)

      Fluid Dynamics 2nd Edition.

      McGraw-Hill.

      ISBN 9781308521527.

    • Hjertager, Bjørn

      (2013)

      Fluid Dynamics.

      McGraw-Hill.

      ISBN 9781121931770.

    • Bjerketvedt, Dag; Hjertager, Bjørn Helge; Tokheim, Lars-André

      (1997)

      Vurdering av eksplosjon i rørledning 13/4-97 ved HPI.

    • Sæter, O.; Solberg, T.; Hjertager, Bjørn Helge

      (1996)

      Validation of the EXSIM-94 gas explosion simulator.

      Hefte 95-1173.

    • Solberg, Tron; Friberg, Per Christian; Hjertager, Bjørn Helge

      (1996)

      CEC EMERGE project : numerical studies : Tel-Tek final report.

      Hefte 500025-.

    • Mathiesen, V.; Solberg, Tron; Hjertager, Bjørn Helge

      (1996)

      NORG underground gas facility : gas explosion analysis.

      Hefte nr. 500.

    • Chynoweth, S.; Hjertager, Bjørn Helge; Puttock, J.S.; Solberg, Tron

      (1996)

      EXSIM-94 predictions for stage 2 of the blast and fire engineering joint industry project.

      Hefte OT.96.4.

    • Hjertager, Bjørn Helge

      (1996)

      EXSIM-94 verssion 2.0 : user's manual.

      Hefte 500016-.

    • George, S; Larsson, Gen; Enfors, SO; Morud, Karin; Hjertager, Bjørn H

      (1992)

      Large-scale test of hydrodynamic-microbial model predictability and comparison with scale down reactor. 215 m3 bubble column at Svenska Jastfabrikken.

    • Hjertager, Bjørn H; Moen, Ingar; Lee, JHS; Eckhoff, Rolf Kristian; Fuhre, K; Krest, O.

      (1981)

      The influence of obstacles on flame propagation and pressure development in a large vented tube.

    • Hjertager, Bjørn H

      (1979)

      Flow, heat transfer and combustion in three-dimensional rectangular enclosures.

    • Hjertager, Bjørn H; Magnussen, Bjørn F.

      (1975)

      A computation procedure for three-dimensional flows with application to some laminar incompressible internal flows.

  • Formidling

    • Hågbo, Trond-Ola; Giljarhus, Knut Erik Teigen; Hjertager, Bjørn H

      (2021)

      Influence of geometry acquisition method on pedestrian wind simulations.

      Smart City Seminar;

      2021-06-10.

    • Hågbo, Trond-Ola; Giljarhus, Knut Erik Teigen; Hjertager, Bjørn H

      (2021)

      Influence of geometry acquisition method on pedestrian wind simulations.

      Poster session at Nordic Edge Expo 2021;

      2021-09-20 - 2021-09-22.

    • Hågbo, Trond-Ola; Giljarhus, Knut Erik Teigen; Hjertager, Bjørn H

      (2019)

      Influence of Geometry Input on Urban CFD Wind Simulations – Comparison of 3D Models from LiDAR, Photogrammetry and Digital Building Data.

      The 15th International Conference on Wind Engineering;

      2019-09-02 - 2019-09-06.

    • Hågbo, Trond-Ola; Giljarhus, Knut Erik Teigen; Qu, Sen; Hjertager, Bjørn H

      (2019)

      The performance of structured and unstructured grids on wind simulations around a high-rise building.

      Computational Methods in Offshore Technology (COTech) 2019;

      2019-11-27 - 2019-11-29.

    • Li, Yuzhu; Ong, Muk Chen; Gudmestad, Ove Tobias; Hjertager, Bjørn H

      (2018)

      Numerical Analysis of Steep Wave-Induced Seabed Response and Liquefaction Around Gravity-Based Offshore Foundations.

      37th International Conference on Ocean, Offshore and Arctic Engineering ;

      2018-06-17 - 2018-06-22.

    • Hjertager, Bjørn H

      (2017)

      Engineering fluid dynamics.

      Energies.

      ISSN 1996-1073.

      Volum 10.

      Hefte 10.

      DOI: 10.3390/en10101467

    • Riva, Lorenzo; Teigen, Knut Erik; Hjertager, Bjørn H; Kalvig, Siri Margrethe

      (2017)

      Implementation and application of the actuator line model by OpenFOAM for a vertical axis wind turbine.

      CoTECH;

      2017-11-29 - 2017-12-01.

    • Hjertager, Bjørn H

      (2017)

      Multi-Fluid CFD Analysis in Process Engineering.

      1st Conference on Computational Methods in Offshore Engineering - COTech2017;

      2017-11-29 - 2017-12-01.

    • Rege, Kristen; Hjertager, Bjørn H

      (2017)

      Application of foam-extend on turbulent fluid-structure interaction.

      First Conference of Computational Methods in Offshore Technology - COTech 2017;

      2017-11-30 - 2017-12-01.

    • Hjertager, Bjørn H

      (2014)

      Flow modelling: A short review of CFD theory.

      CFD modelling of multiphase flow in chemical engineering;

      2014-06-02 - 2014-06-04.

    • Hjertager, Bjørn H

      (2014)

      Basic numerical analysis of multiphase flow.

      CFD modelling of multiphase flow in chemical engineering;

      2014-06-02 - 2014-06-04.

    • Hjertager, Bjørn H

      (2014)

      Euler/Euler analysis of gas/solids reactors.

      CFD modelling of multiphase flow in chemical engineering;

      2014-06-02 - 2014-06-04.

    • Hjertager, Bjørn H

      (2014)

      Euler/Euler analysis of gas/liquid reactors.

      CFD modelling of multiphase flow in chemical engineering;

      2014-06-02 - 2014-06-04.

    • Giljarhus, Knut Erik Teigen; Venkatraman, Marutha Muthu; Nyiredy, Robert; Hjertager, Bjørn

      (2013)

      Turbulence around the helideck of an offshore oil platform.

      OpenSource CFD International Conference;

      2013-10-24 - 2013-10-25.

    • Sreedharan, Vikram; Hjertager, Bjørn; Solberg, Tron

      (2011)

      A CFD Study of Entrained-Flow Gasifiers using two Feed Types.

      8th International Conference on CFD in Oil&Gas, Metallurgical and Process Industries;

      2011-06-21 - 2011-06-23.

    • Hjertager, Bjørn

      (2011)

      Flow modelling: Short review of CFD theory.

      CFD applications in Multiphase Flows in Chemical Engineering;

      2011-06-06 - 2011-06-10.

    • Hjertager, Bjørn

      (2011)

      Basic Numerical Analysis of Multiphase Flows.

      CFD Applications in Multiphase Flows in Chemical Engineering;

      2011-06-06 - 2011-06-10.

    • Hjertager, Bjørn

      (2011)

      Euler/Euler Analysis of Gas/Solids reactors.

      CFD Applications in Multiphase Flows in Chemical Engineering;

      2011-06-06 - 2011-06-10.

    • Hjertager, Bjørn

      (2011)

      Euler/Euler Analysis of Gas/Liquid Reactors.

      CFD Applications in Multiphase Flows in Chemical Engineering;

      2011-06-06 - 2011-06-10.

    • Sreedharan, Vikram; Hjertager, Bjørn; Solberg, Tron

      (2011)

      CFD Study of Heavy Oil Gasification in an Entrained-Flow Gasifier.

      2011 AIChE Annual Meeting;

      2011-10-16 - 2011-10-21.

    • Nielsen, Allan Holm; Hjertager, Bjørn Helge; Solberg, Tron

      (2010)

      CFD analysis of non-evaporating sprays using the DQMOM method.

      Liquid Atomization and Spray Systems ILASS Europe 2010;

      2010-08-06 - 2010-08-08.

    • Sreedharan, Vikram; Hjertager, Bjørn Helge; Solberg, Tron

      (2010)

      CFD Simulation of Coal Gasification in An Entrained-Flow Gasifier.

      AIChE 2010 Annual Meeting;

      2010-11-07 - 2010-11-12.

    • Nielsen, Allan Holm; Sreedharan, Vikram; Hjertager, Bjørn Helge; Solberg, Tron

      (2010)

      CFD analysis of dilute sprays using the Euler-Lagrange modeling.

      5th OpenFOAM Workshop, Chalmers, , June 21-24, 2010;

      2010-06-21 - 2010-06-24.

    • Hjertager, Bjørn Helge

      (2009)

      Computational analysis of fluid flow processes using OpenFOAM.

      utenTitteltekst;

      2009-04-16 - 2009-04-20.

    • Madsen, Jesper; Solberg, Tron; Hjertager, Bjørn Helge

      (2008)

      Application of the Direct Quadrature Method of Moments (DQMOM) to a Hollow-Cone Water Spray.

      Computational Fluid Dynamics in the Chemical Reaction Engineering V;

      2008-06-15 - 2008-06-20.

    • Bove, Stefano; Solberg, Tron; Hjertager, Bjørn Helge

      (2008)

      Computational Fluid Dynamics of Gas-Liquid Flows in Bubble Columns including Bubble Population Balances.

      6th International Conference on COMPUTATIONAL FLUID DYNAMICS in the Oil & Gas, Metalurgical and Process Industries;

      2008-06-10 - 2008-06-12.

    • Hansen, Rolf; Solberg, Tron; Hjertager, Bjørn Helge

      (2008)

      Modelling of the Bubble Size Distribution in a Square Bubble Column Using the One-Group Interfacial Area Concentration Transport Equation.

      6th International Conference on COMPUTATIONAL FLUID DYNAMICS in the Oil & Gas, Metalurgical and Process Industries;

      2008-06-10 - 2008-06-12.

    • Ruggiero, Loredana; Hansen, Rolf; Solberg, Tron; Hjertager, Bjørn Helge; Osseo, Sesti Libero

      (2008)

      Simulation of High Density Circulating Bed Reactor.

      11th International Conference on Multiphase Flow in Industrial Plants;

      2008-09-07 - 2008-09-10.

    • Mathisen, Vidar; Solberg, Tron; Hjertager, Bjørn Helge

      (2000)

      A numerical study of three-dimensional multiphase flow pattern in a riser.

      Circulating Fluidized Bed Technology VI;

    • Friberg, Paal C.; Hjertager, Bjørn Helge

      (1999)

      Simulation of a 3-dimentional large scale fermenter with four Rushton turbines using a two.fluid model.

      Third international conference on multiphase flow;

    • Solbakken, Trond; Hjertager, Bjørn Helge

      (1999)

      A computational and experimental study of flowpattern in a pilot and afull scale bubble column.

      Third international conference on multiphase flow;

    • Mathisen, Vidar; Solberg, Tron; Hjertager, Bjørn Helge

      (1999)

      A computational study of multiphase flow behavior in a circulating fluidized bed with a realistic particle size distribution.

      Third international conference on multiphase flow;

    • Enfors, S.O.; Friberg, Paal C.; Hjertager, Bjørn helge

      (1999)

      Bioprocess scale-up strategy based on integration of fluid dynamics and microbial physiology.

      2nd European symposium on biochemical engineering science;

    • Hjertager, Bjørn Helge; Mathisen, Vidar; Solberg, Tron

      (1999)

      Computational analysis of some fluidized systems.

      AIChE annual meeting;

    • Hjertager, Bjørn Helge; Solberg, Tron

      (1999)

      A review of computational fluid dynamics (CFD) modeling of gas explosions.

      NATO advanced research workshop;

    • Høiset, Stian; Hjertager, Bjørn Helge; Solberg, Tron; Malo, Kjell A.

      (1998)

      The effect of ignition point location on maximum overpressure.

      ERA Conference on Fire & Blast Engineering, 19 nov. 1997;

    • Høiset, S.; Solberg, T.; Malo, Kjell A.; Hjertager, B. H.

      (1997)

      The effect of ignition point location on maximum explosion pressure.

      Fire & Blast Engineering, ERA Technology Conference;

    • Hjertager, Bjørn Helge; Solberg, Tron

      (1997)

      Validation of gas explosion models.

      UKELG Discussion meeting on trends in expolsion research;

    • Hjertager, Bjørn Helge

      (1997)

      Numerical modelling of gas explosions.

      Seminar at Department of Mechanical Engineering;

    • Hjertager, Bjørn Helge

      (1997)

      CFD modelling and simulation of multiphase reactors.

      Seminar at Department of Chemical Engineering;

    • Hjertager, Bjørn Helge

      (1997)

      Explosions in obstructed vessels.

      Short course on explosion prediction and mitigation : congested volumes and complex geometries;

    • Hjertager, Bjørn Helge

      (1997)

      A numerical model (EXSIM) in detail.

      Short cource on explosion prediction and mitigation : congested volumes and complex geometries;

    • Samuelsberg, A.; Hjertager, Bjørn Helge

      (1997)

      Computational fluid dynamic simulation of an oxy-chlorination reaction in a full-scale fluidized bed reactor.

      5th international Conference on circulating fluidized beds, May 28-31 1996;

    • Mathiesen, V.; Solberg, Tron; Manger, E.; Hjertager, Bjørn Helge

      (1997)

      Modelling and predictions of multiphase flow in a pilotscale circulating fluidized bed.

      5th International Conference on circulating fluidized beds May 28-31 1996;

    • Manger, E.; Solberg, T.; Hjertager, Bjørn Helge

      (1997)

      Simulation of dense particle flow in a CFB riser.

      5th International Conference on circulating fluidized beds, May 28-31 1996;

    • Hjertager, Bjørn Helge

      (1997)

      Process modelling of chemical reactors : zero- versus multidimentional models.

      SIMS'96. Proceedings of 38th simulation conference on applied m odelling and simulation, juni 11-13 1996;

    • Hjertager, Bjørn Helge

      (1997)

      Computational fluid dynamics (CFD) modelling and simulation of bioreactors.

      Konferanse;

      1996-11-30 - .

    • Hjertager, Bjørn Helge; Sæter, O.; Solberg, Tron

      (1997)

      Numerical modelling of gas explosions : a review.

      International Symposium on Hazards, Prevention and Mitigation o f Industrial Expolsions, juni 23-28 1996;

    • Hjertager, Bjørn H

      (1996)

      Computational fluid dynamics (CFD) modelling and simulation of bioreactors.

      Bioprocess Engineering Course;

      1996-06-14 - 1996-06-18.

    • Manger, Eirik; Solberg, Tron; Hjertager, Bjørn H

      (1995)

      Numerical simulation of a vertical lifter.

      5th International Conference on Bulk Materials Storage, Handling and Transportation;

      1995-07-09 - 1995-07-12.

    • Noorman, HJ; Enfors, SO; Hjertager, Bjørn H; Larsson, Gen; Morud, Karin; Tradgardh, C; Tørnquist, M

      (1994)

      Verification of integrated microbial fluid dynamics: Saccharomyces cerevisiae production in a 30m3 scal.

      Progress in Biotechnology;

      1994-08-01 - 1994-08-05.

    • Noorman, HJ; Morud, Karin; Hjertager, Bjørn H; Tradgardh, C; Larsson, Gen; Enfors, SO

      (1993)

      CFD modelling and verification of flow and conversion in a 1 m3 bioreactor.

      Confererence on Bioreactors and Bioprocess fluid dynamics;

      1993-08-01 - 1993-08-06.

    • Morud, Karin; Hjertager, Bjørn H

      (1992)

      Multi-dimensional modelling of processes in bioreactors: Flow and biochemical reaaction in a bubble column and flow in a stirred vessel.

      Bioprocess Engineering meeting ;

      1992-08-01 - 1992-08-05.

    • Hjertager, Bjørn H

      (1985)

      Swirl flows.

      International Journal of Heat and Mass Transfer.

      ISSN 0017-9310.

      Volum 28.

      Hefte 5.

      s.1055-1055.

    • Hjertager, Bjørn H; Fuhre, K; Parker, SJ; Bakke, JR

      (1984)

      Flame Acceleration og propane-air in large-scale obstructed tube.

      ICDERS;

      1984-08-01 - 1984-08-05.

    • Hjertager, Bjørn H

      (1981)

      Numerical simulation of turbulent flame and pressure develpment in gas explosions.

      International Conference on Fuel-Air Explosions;

      1981-11-04 - 1981-11-06.

    • Hjertager, Bjørn H; Fuhre, K; Eckhoff, Rolf Kristian

      (1981)

      Large-scale experiments on flame and pressure development.

      International Conference on Fuel-Air Explosions;

      1981-11-04 - 1981-11-06.

    • Frydenbø, F T; Hjertager, Bjørn H; Nygaard, A; Olsen, Claude R.

      (1980)

      The NUI breathing simulator - Design and experience.

      International Diving Symposium '80;

      1980-02-04 - 1980-02-06.

    • Magnussen, Bjørn F.; Hjertager, Bjørn H

      (1979)

      Calculation of flow, mixing, and evaporation of a two-phase mixture injected into a hot gas stream.

      Two-phase momentum heat and mass transfer in chemical, process and energy engineering systems;

      1979-08-14 - 1979-08-21.

    • Hjertager, Bjørn H; Magnussen, Bjørn F.

      (1976)

      Computation of some three-dimensional laminar incompressible flows.

      1976 Heat Transfer and Fluid Mechanics Institute;

      1976-06-21 - 1976-06-23.

    • Hjertager, Bjørn H; Magnussen, Bjørn F.

      (1976)

      Numerical prediction of three-dimensional turbulent buoyant flow in a ventilated room.

      Turbulent Buoyant Convection;

      1976-08-01 - 1976-08-07.

    • Magnussen, Bjørn F.; Hjertager, Bjørn H

      (1975)

      On the prediction of soot formation and combustion in turbulent flames with special reference to a free-jet C2H2 flame.

      Second European Combustion Symposium;

      1975-09-01 - 1975-09-05.

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