二阶常微分方程的差分格式,具有校正性和预测性

IF 0.5 4区 数学 Q4 MATHEMATICS, APPLIED
V. Shaidurov, A. Novikov
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引用次数: 0

摘要

摘要提出了一种构造具有校正器和预测器性质的二阶常微分方程组积分差分格式序列的技术。方案序列从二阶近似的显式三点Störmer方法开始。每个后续方案还实现了用通过前一方案的解计算的附加项校正的Störmer方法。所得方案的稳定性和第一个方案收敛顺序的增加得到了仔细的证实。给出了试验问题的计算结果,证实了所构造方法的精度顺序的提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Difference schemes for second-order ordinary differential equations with corrector and predictor properties
Abstract A technique for constructing a sequence of difference schemes with the properties of a corrector and a predictor for integrating systems of the second-order ordinary differential equations is presented. The sequence of schemes begins with the explicit three-point Störmer method of the second order of approximation. Each subsequent scheme also implements the Störmer method corrected with additional terms calculated through the solution of the previous scheme. The stability of the resulting schemes and the increase in the order of convergence for the first of them are carefully substantiated. The results of calculations of the test problem are presented, confirming the increase in the order of accuracy of the constructed methods.
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来源期刊
CiteScore
1.40
自引率
16.70%
发文量
31
审稿时长
>12 weeks
期刊介绍: The Russian Journal of Numerical Analysis and Mathematical Modelling, published bimonthly, provides English translations of selected new original Russian papers on the theoretical aspects of numerical analysis and the application of mathematical methods to simulation and modelling. The editorial board, consisting of the most prominent Russian scientists in numerical analysis and mathematical modelling, selects papers on the basis of their high scientific standard, innovative approach and topical interest. Topics: -numerical analysis- numerical linear algebra- finite element methods for PDEs- iterative methods- Monte-Carlo methods- mathematical modelling and numerical simulation in geophysical hydrodynamics, immunology and medicine, fluid mechanics and electrodynamics, geosciences.
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