Implicit multirate GARK methods

S Roberts, J Loffeld, A Sarshar, CS Woodward… - Journal of Scientific …, 2021 - Springer
This work considers multirate generalized-structure additively partitioned Runge–Kutta
methods for solving stiff systems of ordinary differential equations with multiple time scales …

Coupling of model order reduction and multirate techniques for coupled dynamical systems

M Bannenberg, A Ciccazzo, M Günther - Applied Mathematics Letters, 2021 - Elsevier
In refined network simulation one is faced with simulating coupled dynamical systems, as for
instance circuits are coupled to heat or electromagnetics. Simulation costs of such coupled …

Multirate linearly-implicit GARK schemes

M Günther, A Sandu - BIT Numerical Mathematics, 2021 - Springer
Many complex applications require the solution of initial-value problems where some
components change fast, while others vary slowly. Multirate schemes apply different step …

Inter/extrapolation-based multirate schemes: a dynamic-iteration perspective

A Bartel, M Günther - Progress in differential-algebraic equations II, 2020 - Springer
Multirate behavior of ordinary differential equations (ODEs) and differential-algebraic
equations (DAEs) is characterized by widely separated time constants in different …

Multirate partitioned Runge–Kutta methods for coupled Navier–Stokes equations

S Kang, A Dener, A Hamilton, H Zhang… - Computers & …, 2023 - Elsevier
Earth system models are complex integrated models of atmosphere, ocean, sea ice, and
land surface. Coupling the components can be a significant challenge due to the difference …

Analysis of the implicit Euler time-discretization of a class of descriptor-variable linear cone complementarity systems

B Brogliato - Journal of Convex Analysis, 2022 - inria.hal.science
This article is largely concerned with the time-discretization of a class of descriptor-variable
systems coupled with complementarity constraints, named descriptor-variable linear …

Maximum entropy snapshot sampling for reduced basis modelling

MWFM Bannenberg, F Kasolis, M Günther… - … journal for computation …, 2022 - emerald.com
Purpose The maximum entropy snapshot sampling (MESS) method aims to reduce the
computational cost required for obtaining the reduced basis for the purpose of model …

Multimethods for the efficient solution of multiscale differential equations

SB Roberts - 2021 - vtechworks.lib.vt.edu
Mathematical models involving ordinary differential equations (ODEs) play a critical role in
scientific and engineering applications. Advances in computing hardware and numerical …

Reduced order multirate schemes for coupled differential-algebraic systems

M Bannenberg, A Ciccazzo, M Günther - Applied Numerical Mathematics, 2021 - Elsevier
In the context of time-domain simulation of integrated circuits, one often encounters large
systems of coupled differential-algebraic equations. Simulation costs of these systems can …

An algorithm to solve systems of nonlinear differential-algebraic equations with extraordinary efficiency even at high demanded precisions

J Dobeš, D Černý - 2021 International Conference on …, 2021 - ieeexplore.ieee.org
There are many situations when systems of non-linear differential algebraic equations need
to be solved with extraordinary precision. A steady-state analysis (determining the steady …