An efficient adaptive high-order scheme based on the WENO process. (25th November 2016)

• Record Type: Journal Article
• Authors: Sun, Di; Qu, Feng; Yan, Chao
• Is Part Of: Computers & fluids. Volume 140 (2016)
• Page Start: 81
• Page End: 96
• Publication Date: 2016-11-25
• Subjects: Adptive -- WENO -- High order -- Computational fluid dynamics; Fluid dynamics -- Data processing -- Periodicals; 532.050285
• DOI: 10.1016/j.compfluid.2016.09.011
• Languages: English
• ISSNs: 0045-7930

Abstract

Highlights: A new adaptive high order scheme is proposed. This scheme is efficient by avoiding solving redundant nonlinear weights. This scheme is with a high level of resolution. This scheme is robust in simulating complex flow regions. Abstract: In this paper, we propose an efficient adaptive scheme based on the WENO (weighted essentially non-oscillatory) process for the hyperbolic conservation laws. This scheme achieves fifth order accuracy as the fifth order WENO scheme does. Also, due to its adaptive mechanism, the scheme deals with problems which contain both discontinuities and complex smooth regions much better than traditional high order schemes. In addition, the proposed scheme saves computational costs by avoiding solving redundant nonlinear weights in certain places. Systematic analyses and numerical tests show that our adaptive scheme is of a high level of robustness and resolution.