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arXiv 1602.01080math.NAcs.NA
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在演化曲面上求解守恒律的非适应间断Galerkin方案

An unfitted discontinuous Galerkin scheme for conservation laws on evolving surfaces

University of Münster(明斯特大学);University of Leeds(利兹大学)

Christian Engwer, Thomas Ranner, Sebastian Westerheide

AI总结:

本文提出一种非适应间断Galerkin方法用于求解在演化曲面上的输运问题,该方法无需显式跟踪网格,具有高灵活性,通过一维示例展示了其良好的收敛性。

摘要:

受考虑在演化曲面上提出的偏微分方程的守恒律所启发,本文开发了一种新的数值方法用于求解输运问题,并进行了简单的数值测试。该方法基于非适应间断Galerkin方法,其中曲面不被网格显式跟踪,这意味着该方法对几何具有极高的灵活性。此外,间断Galerkin方法非常适合捕捉由曲面演化的输运,而无需空间-时间格式、回溯轨迹或流线扩散。该方法通过一维示例进行了说明,数值结果展示了对于简单测试问题的良好收敛性质。

英文摘要:

Motivated by considering partial differential equations arising from conservation laws posed on evolving surfaces, a new numerical method for an advection problem is developed and simple numerical tests are performed. The method is based on an unfitted discontinuous Galerkin approach where the surface is not explicitly tracked by the mesh which means the method is extremely flexible with respect to geometry. Furthermore, the discontinuous Galerkin approach is well-suited to capture the advection driven by the evolution of the surface without the need for a space-time formulation, back-tracking trajectories or streamline diffusion. The method is illustrated by a one-dimensional example and numerical results are presented that show good convergence properties for a simple test problem.

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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