Numerical simulation of acoustic wave propagation in a low-speed flow field

被引：0
|
作者：
Ni D. [1 ]
Zhang W. [1 ]
Ming P. [1 ]
机构：
[1] College of Power and Energy Engineering, Harbin Engineering University
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2011年 / 32卷 / 10期
关键词：
Acoustic wave propagation; Finite volume method; Low-speed flow; Time-domain; Unstructured grid;
D O I：
10.3969/j.issn.1006-7043.2011.10.009
中图分类号：
学科分类号：
摘要：
In order to study acoustic noise generation while considering that internal viscosity of the propagation medium along with incompressible flow parts affect the results of sound propagation, a decomposition technique was introduced. Based on an unstructured grid, discussed the problem of wave propagation in a low-speed flow using the finite volume method in a time-domain. The compressible N-S equation was devided into incompressible N-S equation and the perturbation equation, while using a Semi-Implicit Method for Pressure Linked Equations (SIMPLE) algorithm. The dispersion-relation-preserving absorption boundary was used. Simulation results at low Mach flow agree well with theoretical predictions, which lays the foundation for wave propagation in a complex flow and for acoustic noise generation and propagation.
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页码：1311 / 1316
页数：5
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