温度场中可吸入颗粒物运动特性的数值模拟

ccording to the requirements of experiment, the rectangular pipe is structured by the GABIT software and the appropriate boundary conditions are set. Work out the N-S equations of three dimensions turbulence by FLUENT software. Adopt Mixture Model, Pressure Correction, and SIMPLE algorithm to proceed the three dimensions numerical calculation of the flow of vertical rectangular tube. The results show that the speed and concentration of the particle change dramatically near the walls, which is the reseason of the adsorption of thermophoresis force. It also proves the result that thermophoresis force is short-range force. The results of numerical calculation are in line with that of experiment. It indicates that it’s practical to use FLUNET software to analyze movement characteristics of inhalant particle in rectangular pipes.