辐射流体力学RH2D程序的重构与改进

J4 ›› 2012, Vol. 34 ›› Issue (2): 93-98.

辐射流体力学RH2D程序的重构与改进

任健1,2，申卫东1

(1.北京应用物理与计算数学研究所，北京 100094;2.中国工程物理研究院研究生部，北京 100088)

收稿日期:2011-02-14 修回日期:2011-05-13 出版日期:2012-02-25 发布日期:2012-02-25

Reconstruction and Improvement of the Radiation Hydrodynamics Code RH2D

REN Jian1,2，SHEN Weidong1

(1.Institute of Applied Physics and Computational Mathematics,Beijing 100094;2.Graduate School,China Academy of Engineering Physics,Beijing 100088,China)

Received:2011-02-14 Revised:2011-05-13 Online:2012-02-25 Published:2012-02-25

摘要/Abstract

摘要：

在科学与工程实际应用研究领域中，经过长期的积累与发展形成了一批应用程序，它们集成了丰富的物理建模与计算方法，而且通过理论模型与实验数据的反复校正，具有较高的数值模拟置信度。但是，随着物理模型的精密化研究，这些程序的算法精度与计算规模难以满足实际问题的研究需求。本文基于JASMIN 框架重构辐射流体力学RH2D程序，优化数据结构与程序结构，并且将辐射分裂计算改进为整体计算。实际算例表明，RH2D程序辐射整体计算的能量守恒性明显好于分裂计算，而且具有较高的并行效率。

关键词: 辐射流体力学；RH2D程序；JASMIN框架；重构；并行计算

Abstract:

In scientific computing and industrial applications, some programs integrated with physical models and numerical methods and verified by theories and the experiment in the past long time, have much more confidence in numerical simulation. But these programs are not suitable for the research requirements in numerical accuracy and computing scales at present. In this paper, the code RH2D have been reconstructed based on JASMIN, and the radiation heat conduction numerical method has been improved from the splitting method to the nonsplitting method. The numerical results for practical problems are presented to show that the nonsplitting method has smaller energy conservation errors and much higher parallel efficiency than the splitting method.

Key words: radiation hydrodynamics;code RH2D;JASMIN;reconstruction;parallel computing

任健1,2，申卫东1. 辐射流体力学RH2D程序的重构与改进[J]. J4, 2012, 34(2): 93-98.

REN Jian1,2，SHEN Weidong1. Reconstruction and Improvement of the Radiation Hydrodynamics Code RH2D[J]. J4, 2012, 34(2): 93-98.