A New High-Order Accuracy Explicit Difference Scheme for Solving Three-Dimensional Parabolic Equations
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摘要: 本文构造了一个解三维抛物型方程的高精度三层显式差分格式,其稳定性条件为r=Δt/Δx2=Δt/Δy2=Δt/Δz2≤1/4,截断误差为O(Δt2+Δx4).Abstract: In this paper,a new three-level explicit difference scheme with high accuracy is proposed for solving three-dimensional parabolic equations.It is shown that the truncation error of the scheme is O(Δt2+Δx4)and the condition of stability of the scheme is r≤1/4.
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[1] 曾文平,三维抛物型方程的一个新的高精度显式差分格式,工科数学,18(4)(1992),20-25. [2] 曾文平,解三维抛物型方程的高精度显式格式,华侨大学学报(自然科学版),16(2)(1995),128-133. [3] S.Mckee,A generalizalion of the Du Fort-Frakel Scheme,J.Inst.Maths.Appliecs,1(1972),42-48. [4] 马驷良,二阶矩阵族Gn(k,Δt)一致有界的充要条件及其对差分方程稳定性的应用,高等学校计算数学学报,2(2)(1980),41-53.
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