Application of a fourth-order relaxation scheme to hyperbolic systems of conservation laws

• 来源期刊: 力学学报（英文版）
• 年，卷（期）: 2006,（1）
• 页码范围: 84-92
• 页数: 9页
• 语种: 英文

摘要

A fourth-order relaxation scheme is derived and applied to hyperbolic systems of conservation laws in one and two space dimensions.The scheme is based on a fourthorder central weighted essentially nonoscillatory (CWENO) reconstruction for one-dimensional cases,which is generalized to two-dimensional cases by the dimension-by-dimension approach.The large stability domain Runge-Kutta-type solver ROCK4 is used for time integration.The resulting method requires neither the use of Riemann solvers nor the computation of Jacobians and therefore it enjoys the main advantage of the relaxation schemes.The high accuracy and high-resolution properties of the present method are demonstrated in one-and two-dimensional numerical experiments.