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arXiv 2101.04798math.NAcs.NA
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线性双曲型方程组某些帐篷格式的收敛性分析

Convergence analysis of some tent-based schemes for linear hyperbolic systems

Dow Drake, Jay Gopalakrishnan, Joachim Schöberl, Christoph Wintersteiger

摘要:

本文研究了对称线性双曲型方程组的非结构推进阵面(满足因果关系条件)的有限元法。收敛性结果和误差界的映射帐篷俯仰计划与标准的不连续Galerkin离散空间近似映射帐篷。技术研究映射帐篷半离散化,设计完全离散计划,证明局部误差界,证明稳定性的时空方面,并通过非结构化层传播的边界误差。

英文摘要:

Finite element methods for symmetric linear hyperbolic systems using unstructured advancing fronts (satisfying a causality condition) are considered in this work. Convergence results and error bounds are obtained for mapped tent pitching schemes made with standard discontinuous Galerkin discretizations for spatial approximation on mapped tents. Techniques to study semidiscretization on mapped tents, design fully discrete schemes, prove local error bounds, prove stability on spacetime fronts, and bound error propagated through unstructured layers are developed.

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