Absorbing boundary conditions for free boundaries

被引：1
|
作者：
Kourta, A [1 ]
Sauvage, R [1 ]
机构：
[1] IMFT, F-31400 Toulouse, France
来源：
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE B-MECANIQUE | 2001年 / 329卷 / 12期
关键词：
computational fluid mechanics; boundary conditions; Navier-Stokes; compressible; unsteady; vortex; aeroacoustic;
D O I：
10.1016/S1620-7742(01)01411-8
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
To ensure the exit of vortices from an open computational domain, new boundary, conditions for compressible Navier-Stokes equations, called 'absorbing conditions', are introduced. They use a layer around computational domain which eliminates nonphysical perturbations. They, are compared to three kinds of boundary conditions based on characteristic relations. Computations of two test cases show the best behaviours of the new boundary), conditions. These last ones involve a very small perturbation and can be used to solve aeroacoustic problems. (C) 2001 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.
引用
收藏
页码：857 / 864
页数：8
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