摘要
本文基于计算气动噪声声类比混合计算理论,提出了一种适用于自通风电机气动噪声预测的方法,该方法先通过对自通风型电机进行瞬态流场仿真,输出流场中的速度、密度等信息,之后将流场信息加载到声学网格上转换为声源,再进行声场计算,通过将仿真得到的结果与试验结果对比,发现误差仅为1.7dB,在工程计算的可接受范围之内,从而证明了本文所提出的自通风型电机气动噪声预测的方法可适用于在电机技术设计阶段对噪声进行预测计算。
Based on the theory of aerodynamic noise acoustic analogy,the ventilation motor aerodynamic noise prediction method is put forward.The method is based on the results of transient flow field simulation,the flow field information such as velocity and density is loaded into the acoustic grid and then transfer into sound source.Comparison of the simulation results and the test results,the deviation is only 1.7 dB which in the acceptable range of engineering calculation.And it proves that the motor aerodynamic noise prediction method can be applied to the motor technology design stage for noise prediction calculation.
作者
申政
何维林
王韬
崔可
Zheng Shen;Wei-lin He;Tao Wang;Ke Cui(CRRC Zhuzhou Electric Co.,Ltd.)
出处
《风机技术》
2019年第5期79-84,共6页
Chinese Journal of Turbomachinery
基金
湖南省科技人才专项“湖湘青年英才”支持计划(项目号2017RS3072)
关键词
电机
风扇
气动噪声
Motor
Fan
Aerodynamic Noise
