Parameters Optimization and Numerical Simulation for Soft Abrasive Flow Machining

Abstract

In allusion to the shortcomings of CFD simulation for high volume fraction of abrasives flow, a new and high efficient scheme is developed to calculate the collision velocity between the abrasive and the wall surface. The V shaped gradually variable channel is regarded as a kind of typical and effective machining flow channel and the soft abrasive flow machining for this channel is researched. Based on Eulerian-Lagrangian multiphase flow model, an analytical method was proposed to optimize the parameters of the soft abrasive flow machining. The simulation shows that the initial velocity of the abrasive flow influences much on the pressure distribution but little on the abrasive volume fraction distribution, while the abrasive volume fraction influences much on the flow pressure, but little on the velocity. The experiment is taken to verify the simulation. The experiment results show that the computation scheme and the analytical method are useful