On the TVD property of second order methods for 2D scalar conservation laws
Loading...
Date
2021-10-05
Authors
Krivodonova, Lilia
Smirnov, Alexey
Advisor
Journal Title
Journal ISSN
Volume Title
Publisher
arXiv
Abstract
The total variation diminishing (TVD) property is an important tool for ensuring nonlinear stability and convergence of numerical solutions of one-dimensional scalar conservation laws. However, it proved to be challenging to extend this approach to two-dimensional problems. Using the anisotropic definition for discrete total variation (TV), it was shown in [14] that TVD solutions of two-dimensional hyperbolic equations are at most first order accurate. We propose to use an alternative definition resulting from a full discretization of the semi-discrete Raviart-Thomas TV. We demonstrate numerically using the second order discontinuous Galerkin method that limited solutions of two-dimensional hyperbolic equations are TVD in means when total variation is computed using the new definition
Description
Keywords
hyperbolic conservation laws, total variation diminishing schemes, discontinuous Galerkin method, high-order methods