| 一种求解二维辐射流体力学方程组的显隐式格式 |
| |
| 引用本文： | 房尧立,王一. 一种求解二维辐射流体力学方程组的显隐式格式[J]. 计算物理, 2021, 38(4): 401-417. DOI: 10.19596/j.cnki.1001-246x.8312 |
| |
| 作者姓名： | 房尧立 王一 |
| |
| 作者单位： | 中国工程物理研究院研究生院, 北京 100094;北京应用物理与计算数学研究所, 北京 100094 |
| |
| 摘 要： | 构造一种求解二维辐射流体力学方程组的有限体积方法.相较于Euler方程组,辐射流体力学方程组的数值格式设计更为困难.不仅辐射压力与辐射能量的强非线性增加了数值计算的难度,而且求解强激波问题也是一大难点.与此同时,物质量以声速传播,辐射量以光速传播也增加了该系统求解的难度.为了克服这些难点,我们使用MUSCL-Hanco...
|
| 关 键 词： | 辐射流体力学 Godunov-type格式 MUSCL Hancock 二维空间维度 |
| 收稿时间： | 2020-11-30 |
An IMEX Method for 2-D Radiation Hydrodynamics |
| |
| FANG Yaoli,WANG Yi. An IMEX Method for 2-D Radiation Hydrodynamics[J]. Chinese Journal of Computational Physics, 2021, 38(4): 401-417. DOI: 10.19596/j.cnki.1001-246x.8312 |
| |
| Authors: | FANG Yaoli WANG Yi |
| |
| Affiliation: | 1. Graduate School of China Academy of Engineering Physics, Beijing 100094, China2. Institute of Applied Physics and Computational Mathematics, Beijing 100094, China |
| |
| Abstract: | We study a finite volume solver for radiation hydrodynamical models in two space dimensions. For nonlinearity of radiation pressure and radiation energy, it is not a trivial task to develop a numerical scheme for radiation hydrodynamics compared to Euler equations. The current strategy is that the convective part is solved by MUSCL-Hancock schemes, while the diffusive part is handled through an alternative form of TR/BDF2 ( trapezoidal rule with second order backward difference formula ) method. An asymptotic analysis for the grey nonequilibrium diffusion model in time is presented. Numerical experiments are given to show performance of the IMEX scheme. |
| |
| Keywords: | radiation hydrodynamics Godunov-type scheme MUSCL Hancock two space dimensions |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《计算物理》浏览原始摘要信息 |
|
点击此处可从《计算物理》下载全文 |
