A Train The Numerical Simulation Of Gas-particle Separation Characteristics Of The V-shaped Shutters

This paper first overviews now the development of CFD technology, mostly many multiphase (primarily about gas-particle two phases flow) research methods together with the development of multiphase model; and introduced the aspects of CFD technology applying in the field of Heating, ventilation and air conditioning. After the analysis of the forces acted on the single particle posed by the gas flow, and the order comparison between those forces, combining the newly research results, some forces such as Magnus force are neglected. The single particle motion equation is established. According the actual state of the filter applied, the author used the k- ε method to simulate the fluid field and used the no-slip model to simulate the course of the particles divide from the gas in the filter, discrete equation using the method of controlling cubage, and computed using the SIMPLE method. The method of handle of grille encumbrance (Stair-case), which suit for treating the encumbrance of sloping or curved surface, and the simulating programs in the paper can be applied in treating the outlet of air-conditioner and ceiling diffuser and so on just only altering some subroutines. Then, the author attained the chart of the velocity vector and static pressure field of the gas flow under different inlet flow-rates, and the contours of particle concentration and accretion of particle on the baffles, so that the distribution of the gas flow and the particles in the filter was clear. According to the result of the simulation, the author computed the pressure loss and the dust efficiency of the filter, comparing with the experiment test value, and attain the error of them.