流体机械2011，Vol.39Issue(4)：40-43,4.DOI:10.3969/j.issn.1005-0329.2011.04.009
表面粗糙度对无油润滑涡旋压缩机微间隙泄漏的影响
Effect of Surface Roughness upon Leakage Flow through Micro-clearances in Oil-free Scroll Compressor
摘要
Abstract
Saw-tooth roughness elements were used to make two- dimensional models of micro- clearances to show effects of surface roughness upon leakage flow in off-flee scroll compressor. Based on micro-scale clearances and low pressure drop leakage flow, the effects of the height, density and distribution of roughness elements upon fully developed leakage flow were studied with the help of numerical simulation technology. As a result, it is shown that gas reflux and separation exist near the boundary of clearances. The effects upon lealage flow depend on the height, density and distribution of roughness elements. It is concluded that under the same conditions of the height of clearances and the inlet pressure, the flow resistance increases and the leakage rate decreases by increasing the height and density of surface roughness elements.关键词
表面粗糙度/无油润滑涡旋压缩机/泄漏Key words
surface roughness/ oil-free scroll compressor/ leakage分类
机械制造引用本文复制引用
李超,梁秋立,赵嫚..表面粗糙度对无油润滑涡旋压缩机微间隙泄漏的影响[J].流体机械,2011,39(4):40-43,4.基金项目
国家自然科学基金资助项目(50975132) （50975132）
