A fast and accurate domain decomposition nonlinear manifold reduced order model

AN Diaz, Y Choi, M Heinkenschloss - Computer Methods in Applied …, 2024 - Elsevier
This paper integrates nonlinear-manifold reduced order models (NM-ROMs) with domain
decomposition (DD). NM-ROMs approximate the full order model (FOM) state in a nonlinear …

SVD perspectives for augmenting DeepONet flexibility and interpretability

S Venturi, T Casey - Computer Methods in Applied Mechanics and …, 2023 - Elsevier
Deep operator networks (DeepONets) are powerful and flexible architectures that are
attracting attention in multiple fields due to their utility for fast and accurate emulation of …

Gplasdi: Gaussian process-based interpretable latent space dynamics identification through deep autoencoder

C Bonneville, Y Choi, D Ghosh, JL Belof - Computer Methods in Applied …, 2024 - Elsevier
Numerically solving partial differential equations (PDEs) can be challenging and
computationally expensive. This has led to the development of reduced-order models …

gLaSDI: Parametric physics-informed greedy latent space dynamics identification

X He, Y Choi, WD Fries, JL Belof, JS Chen - Journal of Computational …, 2023 - Elsevier
A parametric adaptive physics-informed greedy Latent Space Dynamics Identification
(gLaSDI) method is proposed for accurate, efficient, and robust data-driven reduced-order …

Local Lagrangian reduced-order modeling for the Rayleigh-Taylor instability by solution manifold decomposition

SW Cheung, Y Choi, DM Copeland, K Huynh - Journal of Computational …, 2023 - Elsevier
Abstract The Rayleigh-Taylor instability is a classical hydrodynamic instability of great
interest in various disciplines of science and engineering, including astrophysics …

Damage identification in fiber metal laminates using Bayesian analysis with model order reduction

NKB Muralidhar, C Gräßle, N Rauter… - Computer Methods in …, 2023 - Elsevier
Fiber metal laminates (FML) are composite structures consisting of metals and fiber
reinforced plastics (FRP) which have experienced an increasing interest as the choice of …

Accelerating kinetic simulations of electrostatic plasmas with reduced-order modeling

PH Tsai, SW Chung, D Ghosh, J Loffeld, Y Choi… - arXiv preprint arXiv …, 2023 - arxiv.org
Despite the advancements in high-performance computing and modern numerical
algorithms, the cost remains prohibitive for multi-query kinetic plasma simulations. In this …

Train small, model big: Scalable physics simulators via reduced order modeling and domain decomposition

SW Chung, Y Choi, P Roy, T Moore, T Roy… - Computer Methods in …, 2024 - Elsevier
Numerous cutting-edge scientific technologies originate at the laboratory scale, but
transitioning them to practical industry applications is a formidable challenge. Traditional …

Reduced-order modeling for parameterized PDEs via implicit neural representations

T Wen, K Lee, Y Choi - arXiv preprint arXiv:2311.16410, 2023 - arxiv.org
We present a new data-driven reduced-order modeling approach to efficiently solve
parametrized partial differential equations (PDEs) for many-query problems. This work is …

Explicable hyper-reduced order models on nonlinearly approximated solution manifolds of compressible and incompressible Navier-Stokes equations

F Romor, G Stabile, G Rozza - arXiv preprint arXiv:2308.03396, 2023 - arxiv.org
A slow decaying Kolmogorov n-width of the solution manifold of a parametric partial
differential equation precludes the realization of efficient linear projection-based reduced …