基于CFD的离心风机蜗壳优化研究  

Optimization Analysis of a Centrifugal Fan Volute Based on CFD

作　　者：张琦 邵准远 徐淑君 贾会勉 Qi Zhang;Zhun-yuan Shao;Shu-jun Xu;Hui-mian Jia(Zhe Jiang Shang Feng Industrial Holdings Co.,Ltd.)

机构地区：[1]浙江上风高科专风实业有限公司,浙江绍兴312302

出　　处：《风机技术》2017年第5期32-35,76,共5页Chinese Journal of Turbomachinery

摘　　要：为研究离心风机蜗壳出口宽度对风机性能的影响,用solidworks建立了风机模型,并通过测试验证了模型选取的合理性。在原风机模型基础上,改变蜗壳出口宽度,对两种不同出口宽度的风机进行气动优化计算分析,优化后的模型效率提高了4.5%。研究表明:蜗壳出口宽度偏小,其流量小,压力大,效率低;蜗壳出口宽度偏大,流量大,压力小。A centrifugal fan is modeled by Solidworks to analyze the effect of the outlet width of a centrifugal fan volute on the performance of the fan.First,the Solidworks model is verified by a test,subsequently the outlet width of the volute is varied,i.e.,two fans with different outlet width of the volute are simulated.The optimal width increases the efficiency by4.5%after test.The results show that the fan with a smaller outlet width of the volute has a smaller flow rate and higher pressure,but lower efficiency.The larger outlet volute width of the fan has a higher mass flow rate but smaller pressure ratio.

关 键 词：CFD 蜗壳优化 离心风机 蜗壳 

分 类 号：TH432[机械工程—机械制造及自动化] TK05[动力工程及工程热物理]