| タイトル | Characteristic time-stepping or local preconditioning of the Euler equations |
| 著者（英） | Roe, Philip L.; Van Leer, Bram; Lee, Wen-Tzong |
| 著者所属（英） | Michigan Univ. |
| 発行日 | 1991-01-01 |
| 言語 | eng |
| 内容記述 | A derivation is presented of a local preconditioning matrix for multidimensional Euler equations, that reduces the spread of the characteristic speeds to the lowest attainable value. Numerical experiments with this preconditioning matrix are applied to an explicit upwind discretization of the two-dimensional Euler equations, showing that this matrix significantly increases the rate of convergence to a steady solution. It is predicted that local preconditioning will also simplify convergence-acceleration boundary procedures such as the Karni (1991) procedure for the far field and the Mazaheri and Roe (1991) procedure for a solid wall. |
| NASA分類 | FLUID MECHANICS AND HEAT TRANSFER |
| レポートNO | 91A40726
AIAA PAPER 91-1552 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/347704 |
