Barycentric rational interpolation method for solving KPP equation

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-01-01 DOI:10.3934/era.2023152

Jin Li, Yongling Cheng

引用次数: 3

Abstract

In this paper, we seek to solve the Kolmogorov-Petrovskii-Piskunov (KPP) equation by the linear barycentric rational interpolation method (LBRIM). As there are non-linear parts in the KPP equation, three kinds of linearization schemes, direct linearization, partial linearization, Newton linearization, are presented to change the KPP equation into linear equations. With the help of barycentric rational interpolation basis function, matrix equations of three kinds of linearization schemes are obtained from the discrete KPP equation. Convergence rate of LBRIM for solving the KPP equation is also proved. At last, two examples are given to prove the theoretical analysis.

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求解KPP方程的质心有理插值法

本文利用线性质心有理插值方法(LBRIM)求解Kolmogorov-Petrovskii-Piskunov (KPP)方程。由于KPP方程中存在非线性部分，提出了直接线性化、部分线性化、牛顿线性化三种线性化方案，将KPP方程转化为线性方程。利用重心有理插值基函数，从离散KPP方程得到了三种线性化方案的矩阵方程。并证明了LBRIM求解KPP方程的收敛速度。最后，通过两个实例验证了理论分析的正确性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

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