A coarse grid extraction of sound signals for computational aeroacoustics

被引：1

作者：

Djambazov, GS ^{[1
]}

Lai, CH ^{[1
]}

Pericleous, KA ^{[1
]}

Wang, ZK ^{[1
]}

机构：

[1] Univ Greenwich, Sch Comp & Math Sci, Old Royal Naval Coll, London SE10 9LS, England

来源：

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS | 2002年 / 40卷 / 12期

关键词：

computational aeroacoustics; multi-scale; defect correction methods;

D O I：

10.1002/fld.408

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Sound waves are propagating pressure fluctuations, which are typically several orders of magnitude smaller than the pressure variations in the flow field that account for flow acceleration. On the other hand, these fluctuations travel at the speed of sound in the medium, not as a transported fluid quantity. Due to the above two properties, the Reynolds averaged Navier-Stokes equations do not resolve the acoustic fluctuations. This paper discusses a defect correction method for this type of multi-scale problems in aeroacoustics. Numerical examples in one dimensional and two dimensional are used to illustrate the concept. Copyright (C) 2002 John Wiley Sons, Ltd.

引用

页码：1515 / 1525

页数：11

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