Local Analysis of Local Discontinuous Galerkin Method for the Time-Dependent Singularly Perturbed Problem

Local Analysis of Local Discontinuous Galerkin Method for the Time-Dependent Singularly Perturbed Problem
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时变奇异摄动问题的局部间断伽辽金法的局部分析

DOI:
10.1007/s10915-014-9901-6
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发表时间:
2015-05
影响因子:
2.5
通讯作者:
Zhang, Qiang
Zhang, Qiang
中科院分区:
数学2区
文献类型:
--
作者:
Cheng, Yao;Zhang, Feng;Zhang, Qiang

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本文给出了局部间断Galerkin(LDG)方法在求解一维定常流出边界层奇异摄动问题时的局部稳定性分析和局部误差估计。基于局部稳定性的一般框架,我们得到了二阶显式Runge-Kutta时间推进的半离散LDG格式和全离散LDG格式在流出边界点附近宽度为的局部子域外的最优误差估计.这是最大网格长度。最后给出了数值实验。
In this paper we will present the local stability analysis and local error estimate for the local discontinuous Galerkin (LDG) method, when solving the time-dependent singularly perturbed problems in one dimensional space with a stationary outflow boundary layer. Based on a general framework on the local stability, we obtain the optimal error estimate out of the local subdomain, which is nearby the outflow boundary point and has the width of, for the semi-discrete LDG scheme and the fully-discrete LDG scheme with the second order explicit Runge–Kutta time-marching. Hereis the maximum mesh length. The numerical experiments are given also.
DOI: 10.1090/s0025-5718-03-01486-8
发表时间: 2003-07
期刊: Math. Comput.
影响因子: --
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