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·
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( Δ t 2+ Δ x 4+ Δ y 4+ Δ z 4) ,respectively.
出处
《应用数学和力学》
EI
CSCD
北大核心
1999年第7期737-742,共6页
Applied Mathematics and Mechanics
基金
辽宁省教委自然科学基金
关键词
热传导方程
隐式差分格式
显式差分格式
解
parabolic partial differential equation of three_dimension
implicit difference scheme
explicit difference scheme
local truncation error
absolutely stable
conditin stable