[HTML][HTML] The entropy fix in augmented Riemann solvers in presence of source terms: Application to the shallow water equations

J Mairal, J Murillo, P García-Navarro - Computer Methods in Applied …, 2023 - Elsevier
Extensions to the Roe and HLL method have been previously formulated in order to solve
the Shallow Water equations in the presence of source terms. These were named the …

A new well-balanced finite-volume scheme on unstructured triangular grids for two-dimensional two-layer shallow water flows with wet-dry fronts

X Liu - Journal of computational physics, 2021 - Elsevier
In this study, a novel two-dimensional finite-volume method on unstructured triangular
meshes for two-layer shallow water flows is developed. First, the one-dimensional relaxation …

Well-balanced numerical resolution of the two-layer shallow water equations under rigid-lid with wet–dry fronts

R Lteif - Computers & Fluids, 2022 - Elsevier
In this paper, we present a well-balanced numerical scheme for the frictional two-layer
shallow water equations (2LSWE) over variable bottom topography and under a rigid-lid …

Numerical stability analysis of shock-capturing methods for strong shocks II: high-order finite-volume schemes

W Ren, W Xie, Y Zhang, H Yu, Z Tian - arXiv preprint arXiv:2308.03428, 2023 - arxiv.org
The shock instability problem commonly arises in flow simulations involving strong shocks,
particularly when employing high-order schemes, limiting their applications in hypersonic …

Further studies on numerical instabilities of Godunov-type schemes for strong shocks

W Xie, Z Tian, Y Zhang, H Yu, W Ren - Computers & Mathematics with …, 2021 - Elsevier
In this paper, continuous research is undertaken to explore the underlying mechanism of
numerical shock instabilities of Godunov-type schemes for strong shocks. By conducting …

Probabilistic simulation of hydraulic jump in a riverbed in presence and absence of stilling basin

F Hajizadehmishi, SM Amiri, AA Hekmatzadeh… - … Research and Risk …, 2024 - Springer
This study examines how the variability of the Manning coefficient (n) affects the position of
hydraulic jumps downstream of hydraulic structures. Using a robust finite volume method …

Preserving stationary discontinuities in two-layer shallow water equations with a novel well-balanced approach

M Akbari, B Pirzadeh - Journal of Hydroinformatics, 2023 - iwaponline.com
This paper proposes a novel energy-balanced numerical scheme for the two-layer shallow
water equations (2LSWEs) that accurately captures internal hydraulic jumps without …

Discontinuous Galerkin well-balanced schemes using augmented Riemann solvers with application to the shallow water equations

A Navas-Montilla, P Solán-Fustero… - Journal of …, 2020 - iwaponline.com
High order methods are becoming increasingly popular in shallow water flow modeling
motivated by their high computational efficiency (ie the ratio between accuracy and …

Implementation of exactly well‐balanced numerical schemes in the event of shockwaves: A 1D approach for the shallow water equations

M Akbari, B Pirzadeh - … Journal for Numerical Methods in Fluids, 2022 - Wiley Online Library
This article presents a numerical technique that ensures the exact solution of stationary
shockwaves, known as the hydraulic jump, for the one‐dimensional shallow water equations …

High order finite difference WENO methods for shallow water equations on curvilinear meshes

Z Liu, Y Jiang, M Zhang, Q Liu - Communications on Applied Mathematics …, 2023 - Springer
A high order finite difference numerical scheme is developed for the shallow water
equations on curvilinear meshes based on an alternative flux formulation of the weighted …