A Hermite WENO reconstruction for fourth order temporal accurate schemes based on the GRP solver for hyperbolic conservation laws

JOURNAL OF COMPUTATIONAL PHYSICS

卷:355

Article

Du, Zhifang¹  Li, Jiequan² 

[1] Beijing Normal Univ, Sch Math Sci, Beijing 100875, Peoples R China

[2] Inst Appl Phys & Computat Math, Lab Computat Phys, Beijing, Peoples R China

关键词: Hyperbolic conservation laws;    Two-stage fourth-order accurate scheme;    Hermite WENO reconstruction;    GRP solver;   

DOI  :  10.1016/j.jcp.2017.11.023

来源: Elsevier

【 摘 要 】

This paper develops a new fifth order accurate Hermite WENO (HWENO) reconstruction method for hyperbolic conservation schemes in the framework of the two-stage fourth order accurate temporal discretization in Li and Du (2016) [13]. Instead of computing the first moment of the solution additionally in the conventional HWENO or DG approach, we can directly take the interface values, which are already available in the numerical flux construction using the generalized Riemann problem (GRP) solver, to approximate the first moment. The resulting scheme is fourth order temporal accurate by only invoking the HWENO reconstruction twice so that it becomes more compact. Numerical experiments show that such compactness makes significant impact on the resolution of nonlinear waves. (C) 2017 Elsevier Inc. All rights reserved.

【 授权许可】

Free