An appropriate numerical dissipation for SLAU2 towards shock-stable compressible multiphase flow simulations

Autor:	Junya, Aono, Keiichi, Kitamura
Rok vydání:	2022
Předmět:	Computational Mathematics Numerical Analysis Physics and Astronomy (miscellaneous) Numerical dissipation Applied Mathematics Modeling and Simulation Multiphase flow Material interface AUSM-family Computer Science Applications
Zdroj:	Journal of Computational Physics. 462:111256
ISSN:	0021-9991
DOI:	10.1016/j.jcp.2022.111256
Popis:	This paper proposes a novel method for the computation of compressible multiphase flows under the assumption of pressure equilibrium based on a 6-equation model and the AUSM (Advection Upstream Splitting Method) family. In this study, we introduce a new numerical pressure flux dissipation term based on the relative velocities in the gas and liquid phases to develop an analogous carbuncle-suppression mechanism that is applicable to gas dynamics. We also propose a mass flux dissipation term based on the pressure ratio at the gas-liquid interface and incorporate both terms into SLAU2, an AUSM-family scheme, to achieve robustness against shock anomalies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64478a3d5f7ff75823abb8b8318a3dad https://doi.org/10.1016/j.jcp.2022.111256 Zobrazit plný text záznamu Full Text from ScienceDirect