Abstract
Computational grids of the complex internal flow passage in air pre-filter were generated, using the partitioned mixed grids. Based on the method of user-defined functions controlling sliding mesh, a program of defining moving boundary was proposed, and numerical simulation of the rotor movement transient controlled by the flow field of air pre-filter was achieved. Based on the theory of Euler-Lagrange phase flows, stochastic particle trajectory model and cell source method were adopted to calculate the trajectories and concentration distributions of particle phase in air pre-filter.
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