摘要
本文介绍了清扫车配套风机总体技术状况,针对新研发的S流道的7.8C低噪风机进行流场分析,通过实验数据对计算结果进行验证。研究表明,CFD计算结果和实验结果较为吻合。在此基础上,采用倾斜蜗舌技术进一步降低风机噪声,优化和风机效率提高了3.2%,比A声噪声降低了4.2dB.
The general technical situation of sweeper fan was introduced in this paper.Flow field analysis was conducted for a new low noise fan with S style flow channel and it’s result was verified by test data.The research show that calculated results are good agreement with experimental results.The inclined tongue technology is employed to optimize based on previous research,the efficiency of which enhanced 3.2%and specific A sound level reduced 4.2dB.
作者
刘昶
Chang Liu(Guangzhou metro group Co.,LTD.)
出处
《风机技术》
2019年第4期36-39,共4页
Chinese Journal of Turbomachinery
基金
浙江省重大科技专项:核岛级核心关键产品研发——核级离心风机研发及产业化,编号:2019C01147
关键词
气动噪声
CFD
优化设计
降噪
清扫车风机
Aerodynamic Noise
CFD
Optimization Design
Noise Reduction
Sweepers Fan
