解二维抛物型方程的高精度差分格式
A High-order Accuracy Explicit Difference Scheme for Solving the Equation of Two-Dimensional Parabolic Type
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摘要: 本文构造了一个解二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=△t/△x2=△t/△y2≤1/4,截断误差为O(△t2+△x4).Abstract: In this paper, a three explicit difference shcemes with high order accuracy for solving the equations of two-dimensional parabolic type is proposed. The stability condition is r=△t/△x2=△t/△y2≤1/4 and the truncation error is O (△t2+△x4).
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[1] 曾文平,解二维抛物型方程的两个高精度显式差分格式,计算物理,9(4) (1992), 448-450, [2] S, Mckee, A generalization of the Du Fort-Frakel scheme, J, Inst, Maths.Appl ics,(1) (1972), 42-48. [3] 马驯良,二阶矩阵族Gn (K,△t)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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