船用海水调节阀声学性能的仿真预测与试验研究

摘要

为预测某型船用三通调节阀声学性能特性,应用Solidworks软件对阀体主、侧流道结构优化设计.首先将几何模型导入Fluent软件中进行压力场和速度场仿真分析,获取改进后阀体的三维模型;进一步利用ANSYS软件和声学分析软件LMS预测了调节阀在不同开度下主、侧通道的噪声和振动特性曲线.分析结果表明:阀体噪声和振动随着主通道开度的增加而变大;与试验值相比,两者吻合度较高,偏差最大值不超过7%.%It was established an optimization design of the main and by-pass channels′ structure for some marine seawater regulating valve with Solidworks software to predict its acoustic performance.Firstly valve geometrical model has been imported in the Fluent CFD software to simulate the distribution of pressure and velocity field,which can obtain the improved 3D valve model.Moreover the noise and vibration curve of the main and by-pass channels for some 3-way regulating valve with ANSYS and LMS software.The results show that the valve noise and vibration become larger with the increase of the main channel′s opening degree.Compared with the system test experimental data,its acoustic characteristics indicate remarkable consistency and the maximum error is less than 7%.