流体机械2016，Vol.44Issue(2)：17-23,7.DOI:10.3969/j.issn.1005-0329.2016.02.004
涡旋压缩机非定常流动的三维数值模拟
Numerical Simulation of Three-dimensional Unsteady Flow in the Scroll Compressor
摘要
Abstract
To solve the problem that the flow field in the working chamber of the scroll compressor can not be get in experimen-tal way,because of the translational revolve pattern of its movement part,a three dimensional unsteady numerical method with a moving boundary,clearance and closed chamber was supposed.The geometric model was obtained based on the profile with double arc correction.The problem that the negative volume in a moving boundary was solved and the three dimensional numeri-cal simulation was achieved.The pressure and velocity fields on each section under any crank angle were obtained,so it can show the change of the flow state directly and reveal the change mechanism in the pressurization.The simulation results show that,the pressure field in working chamber was well-distributed,the difference between the maximum and minimum pressure does not exceed 5%.The differential pressure gradually increased along the profile.Velocity distribution is uneven,in a single working chamber the difference between maximum minimum speed can reach 180 m/s.Radial leakage along the meshing line are symmetrical distri-bution,and the maximum of the leakage velocity can reach 200m/s,the maximum of tangential leakage velocity was up to 450m/s.关键词
压缩机/计算机模拟/动态仿真/流场Key words
compressor/computer simulation/dynamic simulation/flow field分类
机械制造引用本文复制引用
查海滨,张晓慧,王君,姜营,仇性启..涡旋压缩机非定常流动的三维数值模拟[J].流体机械,2016,44(2):17-23,7.基金项目
国家自然科学基金项目(50806082) （50806082）
