A novel energy-based modeling framework

R Altmann, P Schulze - Mathematics of Control, Signals, and Systems, 2025 - Springer
We introduce an energy-based model, which seems especially suited for constrained
systems. The proposed model generalizes classical port-Hamiltonian input–state–output …

A novel iterative time integration scheme for linear poroelasticity

R Altmann, M Deiml - ar** scheme for linear
poroelasticity. In each time frame, we iteratively solve the flow and mechanics equations with …

Robust a posteriori error analysis for rotation-based formulations of the elasticity/poroelasticity coupling

V Anaya, A Khan, D Mora, R Ruiz-Baier - SIAM Journal on Scientific …, 2022 - SIAM
We develop the a posteriori error analysis of three mixed finite element formulations for
rotation-based equations in elasticity, poroelasticity, and interfacial elasticity-poroelasticity …

Semi-explicit integration of second order for weakly coupled poroelasticity

R Altmann, R Maier, B Unger - BIT Numerical Mathematics, 2024 - Springer
We introduce a semi-explicit time-step** scheme of second order for linear poroelasticity
satisfying a weak coupling condition. Here, semi-explicit means that the system, which …

Partially explicit generalized multiscale finite element methods for poroelasticity problem

X Su, WT Leung, W Li, SM Pun - Journal of Computational and Applied …, 2024 - Elsevier
We develop a partially explicit time discretization based on the framework of constraint
energy minimizing generalized multiscale finite element method (CEM-GMsFEM) for the …

Higher-order iterative decoupling for poroelasticity

R Altmann, A Mujahid, B Unger - arxiv preprint arxiv:2311.14400, 2023 - arxiv.org
For the iterative decoupling of elliptic-parabolic problems such as poroelasticity, we
introduce time discretization schemes up to order $5 $ based on the backward differentiation …

Partially Explicit Generalized Multiscale Method for Poroelasticity Problem

X Su, WT Leung, W Li, SM Pun - arxiv preprint arxiv:2310.14199, 2023 - arxiv.org
We develop a partially explicit time discretization based on the framework of constraint
energy minimizing generalized multiscale finite element method (CEM-GMsFEM) for the …

Crank-Nicolson-type iterative decoupled algorithms for Biot's consolidation model using total pressure

H Gu, M Cai, J Li - arxiv preprint arxiv:2409.18391, 2024 - arxiv.org
In this work, we develop Crank-Nicolson-type iterative decoupled algorithms for a three-field
formulation of Biot's consolidation model using total pressure. We begin by constructing an …

Decoupling multistep schemes for elliptic-parabolic problems

R Altmann, A Mujahid, B Unger - arxiv preprint arxiv:2407.18594, 2024 - arxiv.org
We study the construction and convergence of decoupling multistep schemes of higher
order using the backward differentiation formulae for an elliptic-parabolic problem, which …

Higher-order iterative decoupling for poroelasticity

R Altmann, A Mujahid, B Unger - Advances in Computational Mathematics, 2024 - Springer
For the iterative decoupling of elliptic–parabolic problems such as poroelasticity, we
introduce time discretization schemes up to order five based on the backward differentiation …