A Runge-Kutta discontinuous Galerkin scheme for hyperbolic conservation laws with discontinuous fluxes

A Runge-Kutta discontinuous Galerkin scheme for hyperbolic conservation laws with discontinuous fluxes
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具有不连续通量的双曲守恒定律的龙格-库塔不连续伽辽金格式

DOI:
10.1016/j.amc.2016.07.030
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发表时间:
2015-10
影响因子:
4
通讯作者:
Keechoo Choi
Keechoo Choi
中科院分区:
数学2区
文献类型:
--
作者:
Peng Zhang;Zhi-Yang Lin;S.C. Wong;Keechoo Choi

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本文提出了一种将Runge-Kutta间断Galerkin方法与δ-映射算法相结合的方法来求解具有间断通量的双曲型守恒律方程。这种混合格式特别适用于非均匀介质中的非线性弹性和非均匀道路条件下的多类交通流。数值算例表明了该格式在求解这两个系统的复杂波时的有效性。此外,讨论意味着所谓的δ-映射算法也可以与任何其他经典的方法相结合,以解决类似的问题一般。
The paper proposes a scheme by combining the Runge–Kutta discontinuous Galerkin method with aδ-mapping algorithm for solving hyperbolic conservation laws with discontinuous fluxes. This hybrid scheme is particularly applied to nonlinear elasticity in heterogeneous media and multi-class traffic flow with inhomogeneous road conditions. Numerical examples indicate the scheme’s efficiency in resolving complex waves of the two systems. Moreover, the discussion implies that the so-calledδ-mapping algorithm can also be combined with any other classical methods for solving similar problems in general.
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