守恒定律
数学
磁通限制器
限制器
标量(数学)
非线性系统
应用数学
单调多边形
有限体积法
数值分析
解耦(概率)
最大值原理
序列(生物学)
计算
数学分析
数学优化
算法
计算机科学
几何学
物理
最优控制
量子力学
电信
遗传学
机械
工程类
控制工程
生物
标识
DOI:10.1090/s0025-5718-2013-02788-3
摘要
In this paper, we present a class of parametrized limiters used to achieve strict maximum principle for high order numerical schemes applied to hyperbolic conservation laws computation. By decoupling a sequence of parameters embedded in a group of explicit inequalities, the numerical fluxes are locally redefined in consistent and conservative formulation. We will show that the global maximum principle can be preserved while the high order accuracy of the underlying scheme is maintained. The parametrized limiters are less restrictive on the CFL number when applied to high order finite volume scheme. The less restrictive limiters allow for the development of the high order finite difference scheme which preserves the maximum principle. Within the proposed parametrized limiters framework, a successive sequence of limiters are designed to allow for significantly large CFL number by relaxing the limits on the intermediate values of the multistage Runge-Kutta method. Numerical results and preliminary analysis for linear and nonlinear scalar problems are presented to support the claim. The parametrized limiters are applied to the numerical fluxes directly. There is no increased complexity to apply the parametrized limiters to different kinds of monotone numerical fluxes.
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