The High Accuracy Explicit Difference Scheme for Solving Parabolic Equations 3-Dimension
-
摘要: 对解三维热传导方程利用待定参数方法构造出一种精度O(Δt2+Δx4+Δy4+Δz4)的高精度易于计算的显式差分格式,并给出了其稳定性,通过数值例子可见其精度较其它方法提高2~3位有效数字。Abstract: In this paper,an explicit three-level symmetrical differencing scheme with parameters for solving parbolic partial differential equation of three-dimension will be considered.The stability condition and local truncation error for the scheme are r<1/2 and O(Δt2+Δx4+Δy4+Δz4),respectively.
-
[1] Du Fort E C, Frankel S P. Stability condition in the numerical treatment of parabolic differential equ~ations[J]. Math Tables Aids Comput,1953,7(4):135~152. [2] 孙鸿烈.一种有效的差分格式[J].辽宁大学学报,1997,24(1):22~28. [3] 周顺兴.解二维和三维抛物型偏微分方程绝对稳定的差分格式[J].计算数学,1980,2(1):90~99. [4] 杨情民.解抛物型方程的一族显格式[J].高等学校计算数学学报,1981,3(4):306~317.
计量
- 文章访问数: 3624
- HTML全文浏览量: 150
- PDF下载量: 966
- 被引次数: 0