Time filters and spurious acoustics in artificial compression methods

被引：3
|
作者：
Guzel, Ahmet [1 ]
Layton, William [2 ]
McLaughlin, Michael [2 ]
Rong, Yao [3 ]
机构：
[1] Batman Univ, Dept Accounting & Tax, Batman, Turkey
[2] Univ Pittsburgh, Dept Math, Pittsburgh, PA 15260 USA
[3] Harbin Inst Technol, Sch Mech Engn & Automat, Shenzhen, Peoples R China
来源：
NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS | 2022年 / 38卷 / 06期
基金：
美国国家科学基金会;
关键词：
artificial compression; time filter; ACCURACY;
D O I：
10.1002/num.22847
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
Artificial compression methods are used in computational fluid dynamics as a cost-effective way of solving for the velocity and pressure in a flow. However, relaxation of compressibility in these algorithms yields nonphysical oscillations in the pressure. This report presents analysis and computational tests of time filters to reduce nonphysical acoustic waves in artificial compression methods.
引用
收藏
页码：1908 / 1928
页数：21
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