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Numerical method on hydrodynamic noise of centrifugal pump
Author(s): 
Pages: 449-455
Year: Issue:  4
Journal: Journal of Ship Mechanics

Abstract: 离心泵作为舰船重要的流体机械,也是管路系统中主要噪声源之一.泵内流动诱发噪声的计算难点在于流噪声声源的准确模拟和边界条件的确定.文中采用CFD方法计算泵内流场并根据FW-H方程提取叶轮转动偶极子声源和蜗壳内表面偶极子声源;基于管道测试技术获得泵进出口边界条件,建立了以蜗壳为界的边界元模型,考虑了蜗壳对声传播的散射作用.通过内域声学直接边界元方法求解泵内声场,建立了离心泵水动力噪声的计算方法.通过试...
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