Calculation of the Acoustic Characteristics of the Flow of a Compressible Viscous Gas Over a Circular Cylinder

被引：0
作者：
K. N. Volkov
V. N. Emel’yanov
A. G. Karpenko
P. S. Chernyshov
机构：
[1] Baltic State Technical University,
[2] St. Petersburg State University,undefined
来源：
Journal of Engineering Physics and Thermophysics | 2022年 / 95卷
关键词：
aeroacoustics; computational gas dynamics; cylinder; noise; flow separation; vortex; directional diagram;
D O I：
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中图分类号：
学科分类号：
摘要：
The generation of noise by the flow of a compressible viscous gas over a circular cylinder as a result of the formation of vortices in it and the separation of them from the surface of the cylinder was considered. The sound field of this flow was calculated using the method of simulation of large vortices, and its acoustic characteristics were determined using the method of acoustic analogy based on the solution of the Ffowcs Williams–Hawkings equation. On the basis of the direct numerical simulation data on the indicated flow, its regimes at diff erent Reynolds numbers were investigated. The results of calculation of the acoustic characteristics of this flow within the framework of the two- and three-dimensional approaches to the solution of the Ffowcs Williams–Hawkings equation were compared. A good agreement has been obtained between the calculated gasdynamic and acoustic characteristics of a gas flow over a circular cylinder and the corresponding experimental and calculation data available in the literature.
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页码：1239 / 1247
页数：8
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