Multiphysics simulations: Challenges and opportunities

DE Keyes, LC McInnes, C Woodward… - … Journal of High …, 2013 - journals.sagepub.com
We consider multiphysics applications from algorithmic and architectural perspectives,
where “algorithmic” includes both mathematical analysis and computational complexity, and …

A novel robust strategy for discontinuous Galerkin methods in computational fluid mechanics: Why? When? What? Where?

GJ Gassner, AR Winters - Frontiers in Physics, 2021 - frontiersin.org
In this paper we will review a recent emerging paradigm shift in the construction and
analysis of high order Discontinuous Galerkin methods applied to approximate solutions of …

Adaptive mesh refinement for hyperbolic systems based on third-order compact WENO reconstruction

M Semplice, A Coco, G Russo - Journal of Scientific Computing, 2016 - Springer
In this paper we generalise to non-uniform grids of quad-tree type the Compact WENO
reconstruction of Levy et al.(SIAM J Sci Comput 22 (2): 656–672, 2000), thus obtaining a …

Enforcing the Courant–Friedrichs–Lewy condition in explicitly conservative local time step** schemes

NY Gnedin, VA Semenov, AV Kravtsov - Journal of Computational Physics, 2018 - Elsevier
An optimally efficient explicit numerical scheme for solving fluid dynamics equations, or any
other parabolic or hyperbolic system of partial differential equations, should allow local …

A class of multirate infinitesimal GARK methods

A Sandu - SIAM Journal on Numerical Analysis, 2019 - SIAM
Differential equations arising in many practical applications are characterized by multiple
time scales. Multirate time integration seeks to solve them efficiently by discretizing each …

An efficient local time-step** scheme for solution of nonlinear conservation laws

L Krivodonova - Journal of Computational Physics, 2010 - Elsevier
We develop an efficient local time-step** algorithm for the method of lines approach to
numerical solution of transient partial differential equations. The need for local time-step** …

[HTML][HTML] High-order explicit local time-step** methods for damped wave equations

MJ Grote, T Mitkova - Journal of Computational and Applied Mathematics, 2013 - Elsevier
Locally refined meshes impose severe stability constraints on explicit time-step** methods
for the numerical simulation of time dependent wave phenomena. Local time-step** …

Coupled multirate infinitesimal GARK schemes for stiff systems with multiple time scales

S Roberts, A Sarshar, A Sandu - SIAM Journal on Scientific Computing, 2020 - SIAM
Traditional time discretization methods use a single timestep for the entire system of interest
and can perform poorly when the dynamics of the system exhibits a wide range of time …

A discontinuous Galerkin immersed boundary solver for compressible flows: Adaptive local time step** for artificial viscosity–based shock‐capturing on cut cells

M Geisenhofer, F Kummer… - International Journal for …, 2019 - Wiley Online Library
We present a higher‐order cut cell immersed boundary method (IBM) for the simulation of
high Mach number flows. As a novelty on a cut cell grid, we evaluate an adaptive local time …

Extrapolated multirate methods for differential equations with multiple time scales

EM Constantinescu, A Sandu - Journal of Scientific Computing, 2013 - Springer
In this paper we construct extrapolated multirate discretization methods that allows one to
efficiently solve problems that have components with different dynamics. This approach is …