**About the Editor**

**Bjørn H. Hjertager** received his Ph.D. from the University of Trondheim, Norway (now the Norwegian University of Science and Technology, NTNU), in 1979. His thesis examined combustion, heat transfer, and fluid flow. Thereafter, he stayed for almost 10 years at Chr. Michelsen Institute. From the late 1980s to the late 1990s, he worked at the Telemark Institute of Technology (HiT-TF), and at the research institute Tel-Tek. He then spent 11 years at Aalborg University in Denmark. Since 2008, he has returned to Norway, as Professor in Fluid Dynamics at the University of Stavanger. He has published more than 180 papers on fluid flow, heat transfer, combustion, gas explosions, and chemical reactors, and has supervised 21 Ph.D. candidates in Norway and Denmark.
