Comparative study of Roe, RHLL and Rusanov fluxes for shock-capturing schemes

2nd International Conference on Computational Fluid Dynamics in Research and Industry

力学;计算机科学;工业技术

Darwis, Malina^1 ; Abdullah, Kamil^1 ; Mohammed, Akmal Nizam^1

Flow Analysis, Simulation and Turbulence Research Group, Universiti Tun Hussien Onn Malaysia, Parit Raja Johor

86400, Malaysia^1

关键词: Comparative studies;    Fluid property;    Flux function;    General patterns;    Iterative calculation;    Shock capturing scheme;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/243/1/012007/pdf
DOI  :  10.1088/1757-899X/243/1/012007

来源: IOP

【 摘 要 】

Computational Fluid Dynamics provides approximations through iterative calculation to simulate and predict the solution and has been extensively used in the investigation of shockwave. The paper aims to compare the capability of Roe, RHLL and Rusanov flux function in capturing shock phenomena. Two cases have been presented in the paper; one-dimensional case and two-dimensional cases. In general, all the considered flux function capable to capture general pattern of the shockwave phenomena. However, the results shows that it is important to pay great attention to the diffusive component of the fluxes. Strong diffusive component of the flux will helps to bring stability in the solution but at the same time prevent the fluxes to capture small changes of the fluid properties.