中国机械工程2011，Vol.22Issue(3)：334-339,6.
基于VOF的模具结构化表面软性磨粒流数值模拟
Softness Abrasive Flow Numerical Simulation for VOF Based Structural Surfaces of Mould
摘要
Abstract
In order to improve the manufacturing quality in the finishing procedure of mould structural surface machining, by combining VOF model and standard k-ε turbulent model as its computational method, the numerical simulation of softness abrasive flow field in micro mould channel was carried out in a zigzag-shaped micro channel model. The computational results turn out that the average velocity of the abrasive particles grows along with the rising of the inlet velocity, which enhances the interaction between the abrasive particles and the channel surfaces, and consequently improves the machining efficiency. Meanwhile, the shape and structure of mould structural channel can also be very influential in abrasive flow machining. Comparing with other technological parameters,the model with diameter of 2mm, inlet velocity of 10m/s, turbulent kinetic energy of 0.4 m2/s2 , and turbulent dissipation rate of 19.8m2/s3 performs better in both axial and tangential velocity distribution and the turbulent kinetic energy distribution, which makes it feasible to reach a higher processing efficiency and a better surface texture pattern. The results of numerical simulation provide a theory basis for the further study of basic flow rules of softness abrasive flow.关键词
流体体积模型/结构化表面/软性磨粒流/数值模拟Key words
volume of fluid model(VOF)/ structural surface/ softness abrasive flow/ numerical simulation分类
矿业与冶金引用本文复制引用
计时鸣,唐波,谭大鹏..基于VOF的模具结构化表面软性磨粒流数值模拟[J].中国机械工程,2011,22(3):334-339,6.基金项目
国家自然科学基金资助项目(50875242,50905163) （50875242,50905163）
浙江省自然科学基金资助项目(Z107517,1090836) （Z107517,1090836）
