Investigation of inertial particle separator withnonuniform surface materials

To efficiently improve the separation efficiency of larger particles without altering the geometry, the twophase flowfield within a typical vaneless inertial particle separator was calculated and then carefully studied by using numerical method. Three basic patterns of inertialdominated particle motion were firstly obtained through an indepth study on the particle trajectories. Then, taking advantage of the differences of three typical materials in particle rebound characteristics, namely, 2024 aluminum alloy, 7020 rubber and 45 steel alloy, a novel inertial particle separator was designed on the basis of the profound understanding of particle motion. The results show that the separation efficiency of the AC dust and Cspec. sand can be thus raised by 60% and 137%, respectively.