Comparison of LES and RANS Models in Compartment Fires Simulation

摘要

Fire is an extremely complex phenomenon with combustion, flow dynamics, radiation, and chemical reaction and so on. At present, there are two field models often used in compartment fires, which are Large Eddy Simulation (LES) models and Reynolds-Averaged N-S (RANS) models. In this page, three cases of the compartment fires are simulated with both of the two field models. By comparing the temperature of different models to the available experimental data, LES apply to the big space compartment fires and RANS work for the tunnel fires. Both of the models can be used in room fires, but the result is not very well. In the future, there is more work to do on researching the field model in compartment fires.