吉林大学学报(工学版) ›› 2022, Vol. 52 ›› Issue (10): 2244-2255.doi: 10.13229/j.cnki.jdxbgxb20210307
• 车辆工程·机械工程 • 上一篇
黄泰明1(),李伟平2(),胡涛涛2,岳万昊2,纪念洲2,李域邦3
Tai-ming HUANG1(),Wei-ping LI2(),Tao-tao HU2,Wan-hao YUE2,Nian-zhou JI2,Yu-bang LI3
摘要:
针对某型号车用爪极发电机在高转速工况下阶次气动噪声特性明显的问题,设计噪声测试实验获得主要阶次噪声,建立流场和声场数值仿真模型,分别对前、后风扇扇叶的压力分布、定子及转子的压力和声功率分布进行分析,研究不同部位对爪极发电机气动噪声的影响。通过矢量合成法对风扇扇叶分布角度进行了优化,对优化后的风扇扇叶分别进行仿真验证和装机试验,验证爪极发电机气动噪声优化效果。试验结果表明,优化后爪极发电机在整个转速范围内的8、12阶次的噪声平均减小量均达到了2.5 dB。
中图分类号:
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