中南大学学报（自然科学版）Issue(1)：62-68,7.DOI:10.11817/j.issn.1672-7207.2016.01.010
混流泵水动力噪声的数值预报方法
Numerical predicting method for hydroacoustics of mixed-flow pump
摘要
Abstract
In order to predict the hydroacoustics of mixed-flow pump accurately, the flow noise of stationary wall was calculated based on boundary element method (BEM) and the noise of rotating source was calculated based on point source model. The numerical result is well in agreement with the data from experiment or reference. After that the fluctuation pressure distribution of a mixed-flow pump was simulated using large eddy simulation (LES), and then the hydroacoustics of stationary component and rotating component of pump were analyzed on the condition that the pump noise was equal to the sum of two components noise. The results show that the biggest fluctuation pressure of stationary component is located in the blade-stator interaction area and the peak value of noise caused by stationary part is in BPF and stator passing frequency and their harmonics. The noise in mixed-flow pump inlet is mainly caused by impeller. The contribution of stationary component can be neglected.关键词
混流泵/水动力噪声/点源模型/边界元法/计算流体力学Key words
mixed-flow pump/hydroacoustics/point source model/boundary element method (BEM)/computational fluid dynamics (CFD)分类
交通工程引用本文复制引用
付建,王永生,靳栓宝..混流泵水动力噪声的数值预报方法[J].中南大学学报（自然科学版）,2016,(1):62-68,7.基金项目
国家自然科学基金青年科学基金资助项目(51309229)(Project(51309229) supported by the National Natural Science Foundation for Young Scientists of China) （51309229）
