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arXiv 1906.03569math.NAcs.NA
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二维和三维Helmholtz方程的一种新的六阶精度紧致格式的开发

Development of a new sixth order accurate compact scheme for two and three dimensional Helmholtz equation

Neelesh Kumar, Ritesh Kumar Dubey

AI总结:

本文提出一种新的六阶精度紧致有限差分格式求解二维和三维Helmholtz方程,其截断误差不依赖波数,适用于大波数问题,并通过数值实验验证了准确性和稳健性。

摘要:

本文提出了一种新的用于二维和三维Helmholtz方程的六阶精度紧致有限差分格式。该格式的主要意义在于,其六阶主截断误差项不显式依赖于相关的波数。这使得该格式即使对于大波数的Helmholtz方程也能稳健地工作。给出了新格式的收敛性分析。给出了各种基准测试问题的数值结果,以支持理论估计。这些数值结果证实了所提格式的准确性和稳健性。

英文摘要:

In this work, a new compact sixth order accurate finite difference scheme for the two and three-dimensional Helmholtz equation is presented. The main significance of the proposed scheme is that its sixth order leading truncation error term does not explicitly depend on the associated wave number. This makes the scheme robust to work for the Helmholtz equation even with large wave numbers. The convergence analysis of the new scheme is given. Numerical results for various benchmark test problems are given to support the theoretical estimates. These numerical results confirm the accuracy and robustness of the proposed scheme.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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