在非均匀网格上解椭圆-双曲型偏微分方程奇异摄动问题
Numerical Solution of a Singularly Perturbed Elliptic Hyperbolic Partial Differential Equation on a Nonuniform Discretization Mesh
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摘要: 本文考察了椭圆一双曲型偏微分方程奇异摄动问题(1.1),证明了迎风差分格式在一特殊的非均匀网格上是一阶一致收敛的.最后给出了一些数值结果.Abstract: In this paper,we consider the upwind difference scheme for singular perturbation problem(1.1).On a special discretization mesh,it is proved that the solution of the upwind difference scheme is first order convergent,uniformly in the small parameter ε,to the solution of problem(1.1).Numerical results are finally provided.
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[1] 王国英,二阶椭圆型偏微分方程奇异摄动问题的差分解法,高等学校计算数学学报,7(2)(1985),151-160. [2] 王国英,二阶椭圆型偏微分方程奇异摄动问题的一族一致收敛差分格式,南京大学数学半年刊,2(1)(1988),102-106.
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