求解热传导方程的一个高精度格式
A High Accuracy Difference Scheme for Solving Heat-Conducting Equations
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摘要: 用待定系数法构造了求解热传导方程的一个高精度隐式格式。格式的截断误差达到 O(τ3+ h6)。证明了当38-18540≤ r<12时,差分格式是稳定的。通过数值试验,比较了差分格式的解和精确解的区别,说明了差分格式的有效性。Abstract: This paper presents an implicit difference scheme with high accuracy for solving heat-conducting equation by means of undetermined parameters .The truncation error of the scheme is O(τ3 + h6 ) .The difference scheme is proved to be stable if 38 - 18540 ≤ r< 12 .The numerical experiment shows the numer-ical solutions of difference scheme and the precise solutions are matched and the difference scheme is effec-tive .
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