F分解炉气固两相流场的数值模拟及优化

o optimize the gas-solid flow field，numerical simulations are performed on DDF precalciner.The gas phase is expressed with k-e two-equation model,while the solid phase is expressed with the discrete phase model and discrete random walk model.The calculated the solid residence time and concentration are consistent with the working data and reference data.The coal feeding wind speed and the depth and angle of coal burner are adjusted basing on the numerical simulation results.