| タイトル | Real Gas Computation Using an Energy Relaxation Method and High-Order WENO Schemes |
| 本文（外部サイト） | http://hdl.handle.net/2060/19980236872 |
| 著者（英） | Shu, Chi-Wang; Montarnal, Philippe |
| 著者所属（英） | Institute for Computer Applications in Science and Engineering |
| 発行日 | 1998-09-01 |
| 言語 | eng |
| 内容記述 | In this paper, we use a recently developed energy relaxation theory by Coquel and Perthame and high order weighted essentially non-oscillatory (WENO) schemes to simulate the Euler equations of real gas. The main idea is an energy decomposition into two parts: one part is associated with a simpler pressure law and the other part (the nonlinear deviation) is convected with the flow. A relaxation process is performed for each time step to ensure that the original pressure law is satisfied. The necessary characteristic decomposition for the high order WENO schemes is performed on the characteristic fields based on the first part. The algorithm only calls for the original pressure law once per grid point per time step, without the need to compute its derivatives or any Riemann solvers. Both one and two dimensional numerical examples are shown to illustrate the effectiveness of this approach. |
| NASA分類 | Numerical Analysis |
| レポートNO | NASA/CR-1998-208712
NAS 1.26:208712
ICASE-98-42 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/97418 |
