An Improved Low-Dissipation AUSMPW plus Scheme for Low MACH Number

被引：0

作者：

Chen, Shusheng ^{[1
]}

Yan, Chao ^{[1
]}

Lin, Boxi ^{[1
]}

Li, Erlong ^{[1
]}

机构：

[1] Beihang Univ, Sch Aeronaut Sci & Engn, Beijing, Peoples R China

来源：

2017 8TH INTERNATIONAL CONFERENCE ON MECHANICAL AND AEROSPACE ENGINEERING (ICMAE) | 2017年

关键词：

low mach number; numerical dissipation; rescale; stronger independence; pressure fluctuations; COMPRESSIBLE FLOWS; COMPUTATIONS; ACCURATE; EFFICIENT;

D O I：

暂无

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The paper suggests a modification of AUSMPW+ scheme designed to low Mach number. For Mach number vanishing, AUSMPW+ scheme has an excessive numerical dissipation to result in the incorrect scaling of pressure and density fluctuations. The modification rescales all velocity components in the numerical flux by the local Mach number. The improved method reduces the dissipation and recovers the correct scaling of pressure and density fluctuations, which is proved by low Mach number cases. In addition, the improved scheme performs the stronger independence than AUSMPW+ in terms of grid, reconstruction method, and Mach number at low speeds.

引用

页码：522 / 526

页数：5

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