Enabling new flexibility in the SUNDIALS suite of nonlinear and differential/algebraic equation solvers

DJ Gardner, DR Reynolds, CS Woodward… - ACM Transactions on …, 2022 - dl.acm.org
In recent years, the SUite of Nonlinear and DIfferential/ALgebraic equation Solvers
(SUNDIALS) has been redesigned to better enable the use of application-specific and third …

Higher-order additive Runge–Kutta schemes for ordinary differential equations

CA Kennedy, MH Carpenter - Applied numerical mathematics, 2019 - Elsevier
Two new implicit–explicit, additive Runge–Kutta (ARK 2) methods are given with fourth-and
fifth-order formal accuracies, respectively. Both combine explicit Runge–Kutta (ERK) …

An energy consistent discretization of the nonhydrostatic equations in primitive variables

MA Taylor, O Guba, A Steyer, PA Ullrich… - Journal of Advances …, 2020 - Wiley Online Library
We derive a formulation of the nonhydrostatic equations in spherical geometry with a Lorenz
staggered vertical discretization. The combination conserves a discrete energy in exact time …

ARKODE: A flexible IVP solver infrastructure for one-step methods

DR Reynolds, DJ Gardner, CS Woodward… - ACM Transactions on …, 2023 - dl.acm.org
We describe the ARKODE library of one-step time integration methods for ordinary
differential equation (ODE) initial-value problems (IVPs). In addition to providing standard …

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 …

Evaluation of implicit‐explicit additive Runge‐Kutta integrators for the HOMME‐NH dynamical core

CJ Vogl, A Steyer, DR Reynolds… - Journal of Advances …, 2019 - Wiley Online Library
Abstract The nonhydrostatic High‐Order Method Modeling Environment (HOMME‐NH)
atmospheric dynamical core supports acoustic waves that propagate significantly faster than …

Entropy–Preserving and Entropy–Stable Relaxation IMEX and Multirate Time–Step** Methods

S Kang, EM Constantinescu - Journal of Scientific Computing, 2022 - Springer
We propose entropy-preserving and entropy-stable partitioned Runge–Kutta (RK) methods.
In particular, we extend the explicit relaxation Runge–Kutta methods to IMEX–RK methods …

Development of the Next-generation Atmosphere Dynamics Model in Russia: Current State and Prospects

VV Shashkin, GS Goyman, ID Tretyak - Lobachevskii Journal of …, 2024 - Springer
The next-generation atmospheric dynamics model for numerical weather prediction and
climate studies is developed at INM RAS and Hydrometcentre of Russia. The model uses a …

An implicit–explicit time discretization scheme for second-order semilinear wave equations with application to dynamic boundary conditions

M Hochbruck, J Leibold - Numerische Mathematik, 2021 - Springer
We construct and analyze a second-order implicit–explicit (IMEX) scheme for the time
integration of semilinear second-order wave equations. The scheme treats the stiff linear …

A high‐order WENO‐limited finite‐volume algorithm for atmospheric flow using the ADER‐differential transform time discretization

MR Norman - Quarterly Journal of the Royal Meteorological …, 2021 - Wiley Online Library
A high‐order‐accurate weighted essentially non‐oscillatory (WENO) limited upwind finite‐
volume scheme is detailed for the compressible, nonhydrostatic, inviscid Euler equations …