多翼离心风机噪声分析的试验及数值研究

【作者】 曹廷云； 陈雪江； 秦国良；

【机构】 西安交通大学能源与动力工程学院；

【摘要】 本文通过传声器搭建的压力脉动测试系统,测量了某多翼离心风机蜗壳壁面一周的压力脉动值及风机进口的噪声频谱,并结合FLUENT计算分析风机内部的流场,分析得出所研究多翼风机的噪声主要是涡流噪声为主,同时旋转噪声也是不容忽视的一部分,最后为该多翼风机提出了降噪的改进方案。更多还原

【Abstract】 Pressure fluctuations of casing surface and fan inlet noise for a multi-blade centrifugal fan were measured.The analysis result showed that vortex noise is an important part of fan noise for this fan.Combined with CFD simulation software FLUENT,leading edge of blade was changed.New model was simulated and compared to original fan,the comparative analysis showed that flow condition of blade passages was improved and fan noise level was reduced.更多还原