Et profilbilde

Professor emeritus
Bjørn Helge Hjertager { "honorific-suffix": "Professor emeritus", "fn": "Bjørn Helge Hjertager", "tel": "Telefon: 51831807", "email": "bjorn.hjertager@uis.no" }

Avdeling/enhet Det teknisk- naturvitenskapelige fakultet
Institutt/senter Institutt for maskin, bygg og materialteknologi
Rom KE E-266
Tlf priv/mob 46790916
Merknader Professor Emeritus of Fluid Dynamics from March 2019

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

Forskningsområder

 - Industrial and Environmental Flows

- Multiphase Chemical Reactors

- Chemical Reactions in Turbulent Flows

- Combustion Hazards

Pågående forskning

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.

Vitenskapelige publikasjoner (fra CRISTin)

  • Hjertager, Bjørn H (2018). Engineering Fluid Dynamics. MDPI. ISBN 978-3-03842-668-4. 212 s.
  • Hjertager, Bjørn H (2015). Fluid Dynamics 2nd Edition. McGraw-Hill. ISBN 9781308521527. 463 s.
  • Hjertager, Bjørn (2013). Fluid Dynamics. McGraw-Hill. ISBN 9781121931770. 475 s.
  • Bjerketvedt, Dag; Hjertager, Bjørn Helge; Tokheim, Lars-André (1997). Vurdering av eksplosjon i rørledning 13/4-97 ved HPI. Tel-Tek. 9 s.
  • 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. Thornton Research Centre.
  • Hjertager, Bjørn Helge (1996). EXSIM-94 verssion 2.0 : user's manual. Tel-Tek.
  • Mathiesen, V.; Solberg, Tron; Hjertager, Bjørn Helge (1996). NORG underground gas facility : gas explosion analysis. Tel-Tek.
  • Solberg, Tron; Friberg, Per Christian; Hjertager, Bjørn Helge (1996). CEC EMERGE project : numerical studies : Tel-Tek final report. Tel-Tek.
  • Sæter, O.; Solberg, T.; Hjertager, Bjørn Helge (1996). Validation of the EXSIM-94 gas explosion simulator. ERA Technology Limited. -218 s.
  • 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. Tel-Tek/KTH.
  • 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. Chr Michelsens institutt.
  • Hjertager, Bjørn H (1979). Flow, heat transfer and combustion in three-dimensional rectangular enclosures. Norwegian University of Science and Technology.
  • Hjertager, Bjørn H; Magnussen, Bjørn F. (1975). A computation procedure for three-dimensional flows with application to some laminar incompressible internal flows. NTH. 26 s.
  • 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. International Association for Wind Engineering (IAWE); 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. Faculty of Science and Technology, University of Stavanger; 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. ASME; 2018-06-17 - 2018-06-22.
  • Hjertager, Bjørn H (2017). Engineering fluid dynamics.
  • Hjertager, Bjørn H (2017). Multi-Fluid CFD Analysis in Process Engineering. UiS; 2017-11-29 - 2017-12-01.
  • Rege, Kristen; Hjertager, Bjørn H (2017). Application of foam-extend on turbulent fluid-structure interaction. UiS; 2017-11-30 - 2017-12-01.
  • 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. University of Stavanger; 2017-11-29 - 2017-12-01.
  • Hjertager, Bjørn H (2014). Basic numerical analysis of multiphase flow. Aalto University; 2014-06-02 - 2014-06-04.
  • Hjertager, Bjørn H (2014). Euler/Euler analysis of gas/liquid reactors. Aalto University; 2014-06-02 - 2014-06-04.
  • Hjertager, Bjørn H (2014). Euler/Euler analysis of gas/solids reactors. Aalto University; 2014-06-02 - 2014-06-04.
  • Hjertager, Bjørn H (2014). Flow modelling: A short review of CFD theory. Aalto University; 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. ICON Ltd; 2013-10-24 - 2013-10-25.
  • Hjertager, Bjørn (2011). Basic Numerical Analysis of Multiphase Flows. Aalto University; 2011-06-06 - 2011-06-10.
  • Hjertager, Bjørn (2011). Euler/Euler Analysis of Gas/Liquid Reactors. Aalto University; 2011-06-06 - 2011-06-10.
  • Hjertager, Bjørn (2011). Euler/Euler Analysis of Gas/Solids reactors. Aalto University; 2011-06-06 - 2011-06-10.
  • Hjertager, Bjørn (2011). Flow modelling: Short review of CFD theory. Aalto University; 2011-06-06 - 2011-06-10.
  • Sreedharan, Vikram; Hjertager, Bjørn; Solberg, Tron (2011). A CFD Study of Entrained-Flow Gasifiers using two Feed Types. SINTEF/NTNU; 2011-06-21 - 2011-06-23.
  • Sreedharan, Vikram; Hjertager, Bjørn; Solberg, Tron (2011). CFD Study of Heavy Oil Gasification in an Entrained-Flow Gasifier. American Institute for Chemical Engineers; 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. 2010-08-06 - 2010-08-08.
  • Nielsen, Allan Holm; Sreedharan, Vikram; Hjertager, Bjørn Helge; Solberg, Tron (2010). CFD analysis of dilute sprays using the Euler-Lagrange modeling. 2010-06-21 - 2010-06-24.
  • Sreedharan, Vikram; Hjertager, Bjørn Helge; Solberg, Tron (2010). CFD Simulation of Coal Gasification in An Entrained-Flow Gasifier. 2010-11-07 - 2010-11-12.
  • Hjertager, Bjørn Helge (2009). Computational analysis of fluid flow processes using OpenFOAM. University of Salerno, Dept of chemical engineering; 2009-04-16 - 2009-04-20.
  • Bove, Stefano; Solberg, Tron; Hjertager, Bjørn Helge (2008). Computational Fluid Dynamics of Gas-Liquid Flows in Bubble Columns including Bubble Population Balances. 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. 2008-06-10 - 2008-06-12.
  • Madsen, Jesper; Solberg, Tron; Hjertager, Bjørn Helge (2008). Application of the Direct Quadrature Method of Moments (DQMOM) to a Hollow-Cone Water Spray. 2008-06-15 - 2008-06-20.
  • Ruggiero, Loredana; Hansen, Rolf; Solberg, Tron; Hjertager, Bjørn Helge; Osseo, Sesti Libero (2008). Simulation of High Density Circulating Bed Reactor. 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.
  • Enfors, S.O.; Friberg, Paal C.; Hjertager, Bjørn helge (1999). Bioprocess scale-up strategy based on integration of fluid dynamics and microbial physiology.
  • Friberg, Paal C.; Hjertager, Bjørn Helge (1999). Simulation of a 3-dimentional large scale fermenter with four Rushton turbines using a two.fluid model.
  • Hjertager, Bjørn Helge; Mathisen, Vidar; Solberg, Tron (1999). Computational analysis of some fluidized systems.
  • Hjertager, Bjørn Helge; Solberg, Tron (1999). A review of computational fluid dynamics (CFD) modeling of gas explosions.
  • 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.
  • Solbakken, Trond; Hjertager, Bjørn Helge (1999). A computational and experimental study of flowpattern in a pilot and afull scale bubble column.
  • Høiset, Stian; Hjertager, Bjørn Helge; Solberg, Tron; Malo, Kjell A. (1998). The effect of ignition point location on maximum overpressure.
  • Hjertager, Bjørn Helge (1997). A numerical model (EXSIM) in detail.
  • Hjertager, Bjørn Helge (1997). CFD modelling and simulation of multiphase reactors.
  • Hjertager, Bjørn Helge (1997). Computational fluid dynamics (CFD) modelling and simulation of bioreactors.
  • Hjertager, Bjørn Helge (1997). Explosions in obstructed vessels.
  • Hjertager, Bjørn Helge (1997). Numerical modelling of gas explosions.
  • Hjertager, Bjørn Helge (1997). Process modelling of chemical reactors : zero- versus multidimentional models.
  • Hjertager, Bjørn Helge; Solberg, Tron (1997). Validation of gas explosion models.
  • Hjertager, Bjørn Helge; Sæter, O.; Solberg, Tron (1997). Numerical modelling of gas explosions : a review.
  • Manger, E.; Solberg, T.; Hjertager, Bjørn Helge (1997). Simulation of dense particle flow in a CFB riser.
  • Mathiesen, V.; Solberg, Tron; Manger, E.; Hjertager, Bjørn Helge (1997). Modelling and predictions of multiphase flow in a pilotscale circulating fluidized bed.
  • Samuelsberg, A.; Hjertager, Bjørn Helge (1997). Computational fluid dynamic simulation of an oxy-chlorination reaction in a full-scale fluidized bed reactor.
  • Høiset, S.; Solberg, T.; Malo, Kjell A.; Hjertager, B. H. (1997). The effect of ignition point location on maximum explosion pressure. [Mangler data];
  • Hjertager, Bjørn H (1996). Computational fluid dynamics (CFD) modelling and simulation of bioreactors. European Federation of Biotechmology; 1996-06-14 - 1996-06-18.
  • Manger, Eirik; Solberg, Tron; Hjertager, Bjørn H (1995). Numerical simulation of a vertical lifter. Institution of Engineers, Australia; 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. 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. MEP/BHR grpoup; 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. 1992-08-01 - 1992-08-05.
  • Hjertager, Bjørn H (1985). Swirl flows.
  • Hjertager, Bjørn H; Fuhre, K; Parker, SJ; Bakke, JR (1984). Flame Acceleration og propane-air in large-scale obstructed tube. 1984-08-01 - 1984-08-05.
  • Hjertager, Bjørn H (1981). Numerical simulation of turbulent flame and pressure develpment in gas explosions. McGill University; 1981-11-04 - 1981-11-06.
  • Hjertager, Bjørn H; Fuhre, K; Eckhoff, Rolf Kristian (1981). Large-scale experiments on flame and pressure development. McGill University; 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. 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. ICHMT; 1979-08-14 - 1979-08-21.
  • Hjertager, Bjørn H; Magnussen, Bjørn F. (1976). Computation of some three-dimensional laminar incompressible flows. 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. ICHMT; 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. European Combustion Institute; 1975-09-01 - 1975-09-05.