Communications on Applied Mathematics and Computation ›› 2023, Vol. 5 ›› Issue (1): 3-30.doi: 10.1007/s42967-020-00112-3

• ORIGINAL PAPERS • Previous Articles     Next Articles

A New Sixth-Order WENO Scheme for Solving Hyperbolic Conservation Laws

Kunlei Zhao1,2, Yulong Du3, Li Yuan1,2   

  1. 1 State Key Laboratory of Scientific and Engineering Computing(LSEC) and Institute of Computational Mathematics and Scientific/Engineering Computing, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190, China;
    2 School of Mathematical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China;
    3 School of Mathematical Sciences, Beihang University, Beijing 100191, China
  • Received:2020-09-04 Revised:2020-11-19 Online:2023-03-20 Published:2023-03-08
  • Contact: Li Yuan,E-mail:lyuan@lsec.cc.ac.cn;Kunlei Zhao,E-mail:klzhao@lsec.cc.ac.cn;Yulong Du,E-mail:kunyu0918@163.com E-mail:lyuan@lsec.cc.ac.cn;klzhao@lsec.cc.ac.cn;kunyu0918@163.com
  • Supported by:
    This work is supported by the National Natural Science Foundation of China (91641107, 91852116, 12071470) and Fundamental Research of Civil Aircraft (MJ-F-2012-04) of Ministry of Industrialization and Information of China.

Abstract: In this paper, we develop a new sixth-order WENO scheme by adopting a convex combination of a sixth-order global reconstruction and four low-order local reconstructions. Unlike the classical WENO schemes, the associated linear weights of the new scheme can be any positive numbers with the only requirement that their sum equals one. Further, a very simple smoothness indicator for the global stencil is proposed. The new scheme can achieve sixthorder accuracy in smooth regions. Numerical tests in some one- and two-dimensional benchmark problems show that the new scheme has a little bit higher resolution compared with the recently developed sixth-order WENO-Z6 scheme, and it is more efficient than the classical fifth-order WENO-JS5 scheme and the recently developed sixth-order WENO6-S scheme.

Key words: Global smoothness indicator, Linear weights, Sixth-order accuracy, WENO

CLC Number: