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arXiv · 2412.19901

A Well-Balanced Fifth-Order A-WENO Scheme Based on Flux Globalization

Shaoshuai Chu·Alexander Kurganov·Ruixiao Xin
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Abstract

We construct a new fifth-order flux globalization based well-balanced (WB) alternative weighted essentially non-oscillatory (A-WENO) scheme for general nonconservative systems. The proposed scheme is a higher-order extension of the WB path-conservative central-upwind (PCCU) scheme recently proposed in [A. Kurganov, Y. Liu and R. Xin, J. Comput. Phys., 474 (2023), Paper No. 111773]. We apply the new scheme to the nozzle flow system and the two-layer shallow water equations. We conduct a series of numerical experiments, which clearly demonstrate the advantages of using the fifth-order extension of the flux globalization based WB PCCU scheme.

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Shaoshuai Chu, Alexander Kurganov, Ruixiao Xin. 2024-12-27. A Well-Balanced Fifth-Order A-WENO Scheme Based on Flux Globalization. https://arxiv.org/abs/2412.19901

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