Entropy stable discontinuous Galerkin methods for balance laws in non-conservative form: Applications to the Euler equations with gravity

M Waruszewski, JE Kozdon, LC Wilcox… - Journal of …, 2022 - Elsevier
In this work a non-conservative balance law formulation is considered that encompasses the
rotating, compressible Euler equations for dry atmospheric flows. We develop a semi …

Robust and accurate simulations of flows over orography using non‐conforming meshes

G Orlando, T Benacchio… - Quarterly Journal of the …, 2024 - Wiley Online Library
We systematically validate the static local mesh refinement capabilities of a recently
proposed implicit–explicit discontinuous Galerkin scheme implemented in the framework of …

A performance study of horizontally explicit vertically implicit (HEVI) time-integrators for non-hydrostatic atmospheric models

FX Giraldo, FAV de Bragança Alves, JF Kelly… - Journal of …, 2024 - Elsevier
We conduct a thorough study of different forms of horizontally explicit and vertically implicit
(HEVI) time-integration strategies for the compressible Euler equations on spherical …

High order implicit-explicit general linear methods with optimized stability regions

H Zhang, A Sandu, S Blaise - SIAM Journal on Scientific Computing, 2016 - SIAM
In the numerical solution of partial differential equations using a method-of-lines approach,
the availability of high order spatial discretization schemes motivates the development of …

The Flux‐Differencing Discontinuous Galerkin Method Applied to an Idealized Fully Compressible Nonhydrostatic Dry Atmosphere

AN Souza, J He, T Bischoff… - Journal of Advances …, 2023 - Wiley Online Library
Dynamical cores used to study the circulation of the atmosphere employ various numerical
methods ranging from finite‐volume, spectral element, global spectral, and hybrid methods …

IMEX HDG-DG: A coupled implicit hybridized discontinuous Galerkin and explicit discontinuous Galerkin approach for shallow water systems

S Kang, FX Giraldo, T Bui-Thanh - Journal of Computational Physics, 2020 - Elsevier
Abstract We propose IMEX HDG-DG schemes for planar and spherical shallow water
systems. Of interest is subcritical flow, where the speed of the gravity wave is faster than that …

A horizontally explicit, vertically implicit (HEVI) discontinuous Galerkin scheme for the 2-dimensional Euler and Navier-Stokes equations using terrain-following …

M Baldauf - Journal of Computational Physics, 2021 - Elsevier
A solver for the Euler equations with optional diffusion based on the Discontinuous Galerkin
(DG) method is presented. To be usable for simulation problems in the atmosphere from the …

The residual balanced IMEX decomposition for singly-diagonally-implicit schemes

SB Rodrigues, GBF Braga, MAF de Medeiros - Applied Numerical …, 2024 - Elsevier
In numerical time-integration with implicit-explicit (IMEX) methods, a within-step adaptable
decomposition called residual balanced (RB) decomposition is introduced. This new …

Development of high-order global dynamical core using discontinuous Galerkin method for atmospheric LES and proposal of test cases: SCALE-DG v0. 8.0

Y Kawai, H Tomita - EGUsphere, 2024 - egusphere.copernicus.org
Focusing on future global atmospheric simulations with grid spacing of O (10–100 m), we
developed a global nonhydrostatic atmospheric dynamical core with high-order accuracy by …

A 3D nonhydrostatic compressible atmospheric dynamic core by multi-moment constrained finite volume method

Q Qin, X Shen, C Chen, F Xiao, Y Dai, X Li - Advances in Atmospheric …, 2019 - Springer
A 3D compressible nonhydrostatic dynamic core based on a three-point multi-moment
constrained finite-volume (MCV) method is developed by extending the previous 2D …