Et profilbilde

Professor/prodekan for forskning
Bjørn Helge Hjertager { "honorific-suffix": "Professor/prodekan for forskning", "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-232
Hjemmeside https://no.linkedin.com/in/bjornhjertager
Tlf priv/mob mob: 46790916
Merknader Professor of Fluid Dynamics and Team Leader Renewable Energy Technology

Academic background


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)

 

Forskningsområder

 

Hjertagers 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 15-20 years has been directed towards the following areas:

- Industrial and Environmental Flows

- Multiphase Chemical Reactors

- Chemical Reactions in Turbulent Flows

- Combustion Hazards

In his field of expertise he has in the last years given courses in:

- Fluid Mechanics and Heat Transfer (BSc level)

- Transport Processes (MSc level)

- Computational Fluid Dynamics (CFD) (MSc level given in Norway, Denmark and Italy)

- Computational multi-Fluid Dynamics (CmFD) (PhD level given in Norway, Denmark, Finland, the Netherlands and Italy)

- Modeling of Chemical and Physical systems (MSc level)

- Consequences from Release of Flammable Materials (MSc level)

More details of the topics and succesful PhD's may be found on the homepage of his former Research Group at Aalborg University Esbjerg (AAUE): http://vbn.aau.dk/da/organisations/cheff-research-group-chemical-fluid-flow-processes(0eaea3ca-a9c0-4802-86b3-e1b82221a817).html

 

Pågående forskning

Hjertager's research is directed towards the following areas:

- Industrial and Environmental Flows

- Multiphase Chemical Reactors

- Chemical Reactions in Turbulent Flows

- Combustion Hazards

Arbeidserfaring

Professional 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 proces engineering/ Chemical flow processes, Aalborg University Esbjerg (AAUE)

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

1997 ?2008 Professor Chemical process engineering, AAUE

2008 - 2012 Head of Department and Professor, UiS

2012 - 2013 Professor and Vice-Dean of Research

2013 - 2014 Acting Dean and Professor

2002 - present General Manager EXSIM Consultants AS

2014 - 2017 Professor and Vice-Dean for Research

2017 - present Professor

Prof. Hjertager has published over 200 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 coauthored over 75 reports during his affiliation with NTH, NUI, CMI, HiT-TF/Tel-Tek and AAUE.

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.

Prof. Hjertager is also listed in Who's Who in Frontier Science and Technology.

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. 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 succesful 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.

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 (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.
  • Hjertager, Bjørn H (1979). Flow, heat transfer and combustion in three-dimensional rectangular enclosures. Norwegian University of Science and Technology.
  • Hjertager, Bjørn H (2017). Editorial - Engineering Fluid Dynamics.
  • Hjertager, Bjørn H (2017). Multi-Fluid CFD Analysis in Process Engineering. UiS; 2017-11-29 - 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];