CFD simulation of a buoyant diffusion flame with a buoyancy-modified turbulence model

摘要

For buoyancy dominated diffusion flames, both thermal and mechanical forces affect the distribution of the mean and turbulent properties. Therefore, the modelling of individual turbulent heat flux thetau_i emerges to be necessary and important. This raises questions about the use of the two equation k-epsilon turbulence model and its variants on such applications.