摘要
空泡噪声是一个非线性动边界的声辐射问题 ,作者针对这个特点 ,提出了一种新的数值方法——混合边界元法。本文应用混合边界元法对无界流场、自由面或固壁面附近空泡溃灭过程辐射的噪声进行计算 ,得到了空泡在不同情况下溃灭辐射声音的特征。结果显示混合边界元方法在这类动边界声辐射问题上 ,能体现出声音传播的延迟效应 ,体现出液体压缩性对声压峰值的影响。
The mixed boundary element method (MBEM) was used to calculate the cavitation noise of bubble in the neighborhood of solidsurface or free-surface in the paper. The characters of cavitation noise under different conditions were obtained with MBEM. The result shows that the delay effect of noise propagation and the effect of the compressibility of liquid on the noise can be obtained. It is also shown that the MBEM is expected to have good prospect in the movable boundary problem of noise radiation.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2001年第1期9-17,共9页
Chinese Journal of Hydrodynamics
基金
国家自然科学基金资助项目! ( 19672 0 37)
