Abstract:

Abrasive flow machining technology has unique advantages in improving the surface quality of precision parts. In order to study the effect of abrasive flow machining on the curved inner surface workpieces used in special environments, the U-tube was used as the research object, and the large eddy simulation (LES) method was used to numerically simulate the abrasive flow polishing U-tube process. The turbulence kinetic energy cloud diagram, wall shear stress cloud diagram and fluid trajectory diagram of the abrasive flow composed of solid-phase silicon carbide and liquid-phase oil at different inlet speeds on the inner surface of the U-tube were drawn, and the situation of abrasive flow and vortex formation in the process of abrasive flow machining were obtained. The influence of different inlet speeds on the quality of abrasive flow polishing U-tube was analyzed, which provided theoretical support for future research work.

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