计算物理 ›› 1987, Vol. 4 ›› Issue (2): 159-168.

• 论文 • 上一篇    下一篇

高空核爆炸火球的二维辐射流体力学计算

王心正, 隋卫星   

  • 收稿日期:1986-11-21 出版日期:1987-06-25 发布日期:1987-06-25

TWO-DIMENSION RADIATION HYDRODYNAMICS CALCULATION OF THE HIGH-ALTITUDE FIREBALL

Wang Xin-zheng, Sui Wei-xing   

  • Received:1986-11-21 Online:1987-06-25 Published:1987-06-25

摘要: 本文介绍了高空核爆炸火球的二维辐射流体力学计算的主要计算方法和部分计算结果,用柱对称最大熵变Eddington因子P-1近似方程描述了高空核爆炸的辐射输运过程,讨论了P-1近似的边界条件,对能量方程和P-1近似方程的耦合,给出了一个新的差分格式,提高了耦合计算的精度,显著地减少了计算量,同时有效地克服了辐射输运计算中出现的非物理振荡现象。

Abstract: his paper presents the major methods of two-dimensional radiation hydrodynamics calculation of the high altitude fireball and a part of the calculation results. The two-dimensional cylinder symmetry radiation hydrodynamics Eulerian equations and maximum entropy variable Eddington factor P-1 approximation equations are used to describe the development Process of the fireball. The new difference schemes are given for the coupled calculation between the energy and P-l approximation equations.