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doi:10.3850/978-981-08-7724-8_16-01
Numerical Computation of Large Scale Fires and Fire Mitigation — From Combustion Science to Industry Application
B.F. Magnussen1,2,a, N.I. Lilleheie2, B.E. Vembe2, B. Lakså2,a, B.Grimsmo2,a, L.A. Lilleeng2, R. Kleiveland2, K.E. Rian2, R. Olsen2 and T. Evanger2
1Norwegian University of Science and Technology, Trondheim, Norway.
abjorn.f.magnussen@computit.no
2Computational Industry Technologies AS (ComputIT), P.O. Box 1260 Pirsenteret, N-7462 Trondheim, Norway
ABSTRACT
The challenge of the mathematical modelling is to transfer basic physical knowledge into a mathematical formulation such that this knowledge can be utilised in computational simulation of practical problems. The combustion phenomena can be subdivided into a large set of interconnected phenomena like flow, turbulence, thermodynamics, chemical kinetics, radiation, extinction, ignition etc. Combustion in one application differs from combustion in another area by the relative importance of the various phenomena. The difference in fuel, geometry and operational conditions often causes the differences. In mathematical modelling of turbulent combustion, one of the big challenges is how to treat the interaction between the chemical reactions and the fluid flow, i.e. the turbulence.
The present paper demonstrates and discusses the development of a coherent technology for fire safety assessment in the oil and gas industry based on the Eddy Dissipation Concept (EDC) by Magnussen. It includes a complete review of the concept and its physical basis and the implementation of the EDC and other models into a dedicated fire simulation code, Kameleon FireEx KFX®, as well as examples of large scale industry applications.
Keywords: KFX®, Fire, EDC.
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