Numerical Simulation On Thermodynamic Critical Technologies Of Multi-physical Coupling Non-linear Tube Abrasive Flow Machining

Non-linear pipes are widely used in civil and military fields, its internal flow surface quality tends to affect the overall performance. The abrasive flow machining technology has provided a reliable and effective solution of improving the quality of the non-linear internal flow surface. Based on the study of abrasive flow machining mechanism and the energy balance of solid-liquid two-phase flow thermodynamic under multi-physical coupling field, and common-rail pipe, fuel spray nozzles, T-pipe and U-tube are taken as the research objects, this paper does a numerical simulation of heat transfer characteristics and corresponding surface processing features on these four non-linear tube of solid-liquid two-phase abrasive flow machining, and gets contours of near wall turbulence kinetic energy, turbulence intensity, turbulent viscosity and dynamic pressure v.s turbulence kinetic energy of inlet, temperature and speed changing. Then, by studying the simulation contours, temperature-turbulence kinetic energy, speed-turbulence kinetic energy, temperature-speed images are drawn, The abrasive flow processing technology of coupling temperature field and velocity field is discussing, which provides a theoretical basis for quality control of abrasive flow processing on the non-linear pipe internal flow.