流体机械Issue(12)：6-11,6.DOI:10.3969/j.issn.1005-0329.2014.12.002
进口速度畸变对轴流风机性能影响的全周数值研究
Full-annulus Numerical Study of Performance in an Axial Fan with Inlet Velocity Distortion
摘要
Abstract
Different radial arrangements for the producing of the velocity distortion were put forward at the same circumferential position on the inlet surface of the calculation region,and the effects of the distortions on the performance as well as on the detailed flow-field in an axial-flow fan were investigated with the method of full-annulus numerical simulation.It’s found that this method can clearly describe the distribution of parameters of the flow field,these kinds of distortion can reduce the efficiency somewhat while increase the static pressure rise.The rotor inlet relative flow angle does not match with the blade profile,leading to the in-crease of the absolute value of the attack angle and the flow deterioration in the cascade,thus the flow loss becomes larger.Further-more,the total pressure on the outlet surface of the calculation region is more non-uniform along the circumferential direction.关键词
轴流风机/速度周向畸变/全通道/数值模拟Key words
axial fan/velocity circumferential distortion/full-annulus/numerical simulation分类
机械制造引用本文复制引用
梁齐文,杨波..进口速度畸变对轴流风机性能影响的全周数值研究[J].流体机械,2014,(12):6-11,6.
