用有限差分法对Cahn-Allen方程进行数值研究

A. Yokuş, H. Bulut
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引用次数: 23

摘要

本文利用有限差分法(FDM)和算子,得到了离散化的Cahn-Allen方程。利用修正指数函数法求解Cahn-Allen方程的解析解,引入Cahn-Allen方程的新初始条件,AIP会议论文集,1798,020033[1]。结果表明,使用傅里叶-冯·诺依曼技术,FDM是稳定的。从误差角度分析了该方法的精度,并对FDM进行了处理,得到了数值结果,构造了包含数值解和精确解以及绝对测量误差的表。通过Wolfram Mathematica 11,可以用二维和三维图形对数值解和精确解进行比较。
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On the numerical investigations to the Cahn-Allen equation by using finite difference method
In this study, by using the finite difference method (FDM for short) and operators, the discretized Cahn-Allen equation is obtained.  New initial condition for the Cahn-Allen equation is introduced, considering the analytical solution given in Application of the modified exponential function method to the Cahn-Allen equation, AIP Conference Proceedings 1798, 020033 [1]. It is shown that the FDM is stable for the usage of the Fourier-Von Neumann technique. Accuracy of the method is analyzed in terms of the errors in and Furthermore, the FDM is treated in order to obtain the numerical results and to construct a table including numerical and exact solutions as well as absolute measuring error. A comparison between the numerical and the exact solutions is supported with two and three dimensional graphics via Wolfram Mathematica 11.
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来源期刊
CiteScore
3.30
自引率
6.20%
发文量
13
审稿时长
16 weeks
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