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解三维抛物型方程的一个ADI格式
An ADI scheme for solving parabolic equation of three-dimension
【摘要】 构造了一个解三维抛物型方程的高精度ADI格式,格式绝对稳定,截断误差为O(△t2+△x4);然后应用Richerdson外推法,外推一次得到了具有O(△t3+△x6)阶精度的近似解.
【Abstract】 This paper presents an ADI scheme of high accuracy for solving parabolic equation of threedimension. The scheme is absolutely stable and the truncation error for the method is O(△t2 +△x4) ;Then Richardson’s extrapolation method is successfully applied to the scheme and the approximate solution with accuracy O(△t3 +△x6) is gained with once extrapolation.
【关键词】 三维抛物型方程;
ADI差分格式;
截断误差;
绝对稳定;
【Key words】 Three-dimension parabolic equation; ADI difference scheme; truncation error; Absolutely stable;
【Key words】 Three-dimension parabolic equation; ADI difference scheme; truncation error; Absolutely stable;
【基金】 河南省教育厅自然科学基础研究基金(20031100010).
- 【文献出处】 纯粹数学与应用数学 ,Pure and Applied Mathematics , 编辑部邮箱 ,2009年01期
- 【分类号】O241.82
- 【被引频次】4
- 【下载频次】332