Numerical homogenization beyond scale separation

R Altmann, P Henning, D Peterseim - Acta Numerica, 2021 - cambridge.org
Numerical homogenization is a methodology for the computational solution of multiscale
partial differential equations. It aims at reducing complex large-scale problems to simplified …

Simulation of the inelastic deformation of porous reservoirs under cyclic loading relevant for underground hydrogen storage

KR Kumar, HT Honorio, H Hajibeygi - Scientific reports, 2022 - nature.com
Subsurface geological formations can be utilized to safely store large-scale (TWh)
renewable energy in the form of green gases such as hydrogen. Successful implementation …

Deep multiscale model learning

Y Wang, SW Cheung, ET Chung, Y Efendiev… - Journal of …, 2020 - Elsevier
The objective of this paper is to design novel multi-layer neural networks for multiscale
simulations of flows taking into account the observed fine data and physical modeling …

Efficient deep learning techniques for multiphase flow simulation in heterogeneous porousc media

Y Wang, G Lin - Journal of Computational Physics, 2020 - Elsevier
We present efficient deep learning techniques for approximating flow and transport
equations for both single phase and two-phase flow problems. The proposed methods take …

Generalized multiscale finite element methods for problems in perforated heterogeneous domains

ET Chung, Y Efendiev, G Li, M Vasilyeva - Applicable Analysis, 2016 - Taylor & Francis
Complex processes in perforated domains occur in many real-world applications. These
problems are typically characterized by physical processes in domains with multiple scales …

Multiscale model reduction for shale gas transport in poroelastic fractured media

IY Akkutlu, Y Efendiev, M Vasilyeva, Y Wang - Journal of Computational …, 2018 - Elsevier
Inherently coupled flow and geomechanics processes in fractured shale media have
implications for shale gas production. The system involves highly complex geo-textures …

Generalized multiscale finite-element method (GMsFEM) for elastic wave propagation in heterogeneous, anisotropic media

K Gao, S Fu, RL Gibson Jr, ET Chung… - Journal of Computational …, 2015 - Elsevier
It is important to develop fast yet accurate numerical methods for seismic wave propagation
to characterize complex geological structures and oil and gas reservoirs. However, the …

[HTML][HTML] Multiscale modeling of heat and mass transfer in fractured media for enhanced geothermal systems applications

M Vasilyeva, M Babaei, ET Chung… - Applied Mathematical …, 2019 - Elsevier
In this work, heat and mass transfer in a hypothetical Enhanced Geothermal System with
complex fracture network is considered. Fracture networks have complex geometries, exist …

Generalized multiscale finite element treatment of a heterogeneous nonlinear strain-limiting elastic model

M Vasilyeva, SM Mallikarjunaiah - Multiscale Modeling & Simulation, 2024 - SIAM
In this work, we consider a nonlinear strain-limiting elastic model in heterogeneous
domains. We investigate heterogeneous material with soft and stiff inclusions and …

[HTML][HTML] Multiscale simulation of inelastic creep deformation for geological rocks

KR Kumar, H Hajibeygi - Journal of Computational Physics, 2021 - Elsevier
Subsurface geological formations provide giant capacities for large-scale (TWh) storage of
renewable energy, once this energy (eg from solar and wind power plants) is converted to …