流体机械2012，Vol.40Issue(5)：45-49,5.DOI:10.3969/j.issn.1005-0329.2012.05.010
基于数值方法对离心压缩机级两种回流器内部流动的分析与对比
Analysis and Comparison of the Inner Flow for Two Return Channel of the Stage of the Centrifugal Compressor
摘要
Abstract
One C type centrifugal compressor use two kinds of return channels, one kind has sudden expansion called as return channel A, the other kind transited from bend smoothly called as channel B. The two return channels are both numerical simulated respectively. The numerical result indicate that the performance of return channel B is better than I hat of return channel B. Because of the sudden expansion of return channel A, the flow status of inlet is worsen which changes the angle of gas, and then induce vortex in the flow channel of the radial surface. For return channel B, because of ihe smooth transition, so the flow field is uniform and the angle of gas is kept. The flow field on the radial surface of return channel B is also better than that of return channel A. So, if return channel A is used for the centrifugal compressor, the angle of the blade of return channel is ought to be modified to reduce the loss of attack.关键词
离心压缩机/回流器/数值模拟Key words
centrifugal compressor/ return channel/ numerical simulation.分类
机械制造引用本文复制引用
朱昌允,秦国良..基于数值方法对离心压缩机级两种回流器内部流动的分析与对比[J].流体机械,2012,40(5):45-49,5.
