The generation of noise in impinging vortex motion past a step
The generation of noise in impinging vortex motion past a step
复制标题
撞击涡流运动经过一步时产生的噪声
DOI：
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发表时间：
1985
期刊：
影响因子：
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通讯作者：
D. Veley
中科院分区：
文献类型：
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作者：
A. Conlisk;D. Veley
在低马赫数条件下，考虑无粘无旋转平均流中一个、两个或几个直线涡经过一个阶跃时所产生的噪声场。将碰撞涡的条纹模式与流动可视化研究结果进行了比较，得到了与实验结果定性一致的结果。声压和声强都是阶跃附近旋涡运动的强函数，由于其几何结构的复杂性，必须进行数值计算。给出了不同入射涡阵列的声压和声强的计算结果。
The noise field generated by the motion of one, two, or several rectilinear vortices in an inviscid, irrotational mean flow past a step is considered for low Mach number. The streakline patterns of an impinging vortex are compared with flow visualization studies, and qualitative agreement between the present analytical results and the experiments is achieved. Both acoustic pressure and intensity are strong functions of the vortex motion near the step which, because of the complexity of the geometry, must be computed numerically. Results for the acoustic pressure and intensity are presented for a variety of incident vortex arrays.