Currently,the solution strategies for not high Re number convection is large eddy simulation method and RANS with turbulent models method.For the LES method, various sub-grid scale models are used, such as Smagorinsky-Lilly model, Lilly's dynamic Smagorinsky model Vreman's model and wall-adapting local eddy-viscosity model, to compare the difference and the applicability for convection flow field.The simulation data with the turbulent models are compared with the experimental data and LES data in order to d...