阀门泄漏的流场和声场特征对于压力管路阀门泄漏检测具有十分重要的意义。本文在理论分析的基础上，构建三维球阀泄漏模型，基于SAS与FW-H模型耦合对球阀泄漏的流场和声场进行仿真计算，得到球阀泄漏的流场和声场分布，对LES模拟、SAS模拟和URANS模拟等三类仿真模型进行对比。研究表明，球阀内漏流场旋涡主要形式是偶极子，并且直接与阀门内漏噪声相关。仿真方法上，基于SAS与FW-H模型耦合的数值模拟方法精度较好，结果与大涡模拟接近，可以较好模拟阀门泄漏，对于阀门泄漏流声场预报以及阀门泄漏检测具有十分重要的参考价值。
The flow field and sound field characteristics of valve leakage are of great significance for valve leakage detection in pressure pipeline. On the basis of theoretical analysis,a three-dimensional ball valve leakage model is constructed in this paper. Based on the coupling of SAS and FW-H model, the flow field and sound field distribution of ball valve leakage are simulated. LES, SAS and URANS models are compared subsequently. The results show that the main form of vortex flow field in ball valve is dipole and is directly related to leakage noise.. Simulation based on coupling of SAS and FW-H model has fairly good accuracy, similar result to the large eddy simulation, and can be simulated satisfiedly for the valve leakage, which has very important reference value for valve leakage sound field prediction and valve leakage detection.
2022,44(2): 86-90 收稿日期：2021-01-25
DOI：10.3404/j.issn.1672-7649.2022.02.016
分类号：U664.5
作者简介：吴猛猛(1986-)，男，博士，讲师，研究方向为舰艇机电设备
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