流体机械2023，Vol.51Issue(11)：57-62,6.DOI:10.3969/j.issn.1005-0329.2023.11.009
蜗壳宽度与粗糙度对小型高速离心风机性能特性的影响
Analysis of the influence of the width and roughness of the volute on the performance characteristics of a small high-speed centrifugal fan
摘要
Abstract
For the problem of the performance degradation caused by the great increase in the millimeter-level channel size and relative roughness inside the small high-speed centrifugal fan,the numerical simulation of the whole machine combined with the experimental test method was used to analyze the influence of the volute roughness and volute width on the performance of the fan and to explore its internal flow.The research results find that the increase of volute width will make its internal flow more disordered and lead to performance degradation,when the volute width is 4.4 mm,its performance is the best;whereas the increase of wall roughness will make the mainstream area concentrated in the middle of the flow channel,and the increase of wall velocity gradient will lead to the performance decrease of the fan.With the increase of roughness,its performance gradually decreases,and when the roughness reaches 30 μm,its pressure rise is relatively reduced by 12.5%.Through the change curve of performance with volute roughness and analysis of the influence of width,this study can provide reference for the development and modification design of high-speed small centrifugal fan.关键词
小型高速离心风机/表面粗糙度/蜗壳宽度/数值分析Key words
small high-speed centrifugal fan/surface roughness/volute width/numerical analysis分类
机械制造引用本文复制引用
宋家祺,王彤..蜗壳宽度与粗糙度对小型高速离心风机性能特性的影响[J].流体机械,2023,51(11):57-62,6.基金项目
航空发动机及燃气轮机基础科学中心项目(P2021-A-I-003-002) （P2021-A-I-003-002）
