计算物理 ›› 1987, Vol. 4 ›› Issue (1): 85-92.

• 论文 • 上一篇    下一篇

空中点爆炸问题的数值解-细网格校正技术

吴颂平   

  1. 北京大学数学系
  • 收稿日期:1986-11-15 出版日期:1987-03-25 发布日期:1987-03-25

NUMERICAL SOLUTION TO POINT SOURCE BLAST IN AIR-GRID REFINEMENT AND CORRECTION

Wu Song-ping   

  1. Department of Mathematios, Peking University
  • Received:1986-11-15 Online:1987-03-25 Published:1987-03-25

摘要: 本文对空中点爆炸问题的数值计算提出了一种自适应网格算法。即在某一时间层上局部截断误差较大的区域内细分网格,重新计算,并用所得的结果修正粗网格上的解。这种自這应网格算法大大提高了计算的效率。

Abstract: An adaptive grid algorithm for the computation of the problem of point source blast in air is proposed. In the algorithm, the refined subgrids are created adaptively in response to the estimated local.truncation error of the solution. The solution on the refined grids is used to correct the original solution on the coarse grids. Numerical computation demonstrates that the propsed algorithm is efficient.