Efficient numerical schemes for fractional water wave models

Efficient numerical schemes for fractional water wave models
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分数水波模型的高效数值方案

DOI:
10.1016/j.camwa.2015.11.018
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发表时间:
2016
影响因子:
2.9
通讯作者:
Shan Zhao
Shan Zhao
中科院分区:
数学2区
文献类型:
--
作者:
Can Li;Shan Zhao

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针对描述地表水波传播的分数阶水波模型,提出了一种有效的数值求解方法。利用加权平移Grünwald-Letnikov(WSGL)公式逼近非局部分数次算子,设计了一系列二阶精度差分格式。严格地证明了所提出的数值格式的数值解的存在性、稳定性和收敛性。分析表明,所提出的数值格式在时间和空间离散上都是无条件稳定的,具有二阶精度。给出了几个数值结果,验证了理论分析的有效性和准确性。
In this paper, efficient numerical schemes are proposed for solving the fractional water wave models that describe the propagation of surface water wave. By using the weighted and shifted Grünwald–Letnikov (WSGL) formula to approximate the nonlocal fractional operators, we design a series of second order accurate difference schemes for the considered models. The existence, stability and convergence of numerical solutions of the proposed numerical schemes are established rigorously. The analysis shows that the proposed numerical schemes are unconditionally stable with second order accuracy for both temporal and spatial discretizations. Several numerical results are provided to verify the efficiency and accuracy of our theoretical analysis.
DOI: --
发表时间: 2007-09
期刊: arXiv: Analysis of PDEs
影响因子: --
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