Adaptive multiscale model reduction with generalized multiscale finite element methods

E Chung, Y Efendiev, TY Hou - Journal of Computational Physics, 2016 - Elsevier
In this paper, we discuss a general multiscale model reduction framework based on
multiscale finite element methods. We give a brief overview of related multiscale methods …

Novel design and analysis of generalized finite element methods based on locally optimal spectral approximations

C Ma, R Scheichl, T Dodwell - SIAM Journal on Numerical Analysis, 2022 - SIAM
In this paper, the generalized finite element method (GFEM) for solving second order elliptic
equations with rough coefficients is studied. New optimal local approximation spaces for …

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 …

Efficient hybrid explicit-implicit learning for multiscale problems

Y Efendiev, WT Leung, G Lin, Z Zhang - Journal of Computational Physics, 2022 - Elsevier
Splitting method is a powerful method to handle application problems by splitting physics,
scales, domain, and so on. Many splitting algorithms have been designed for efficient …

[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 …

[图书][B] Multiscale Model Reduction

E Chung, Y Efendiev, TY Hou - 2023 - Springer
The mathematization of all sciences, the fading of traditional scientific boundaries, the
impact of computer technology, the growing importance of computer modeling and the …

Fast multiscale reservoir simulations using pod-deim model reduction

M Ghasemi, Y Yang, E Gildin, Y Efendiev… - SPE Reservoir …, 2015 - onepetro.org
In this paper, we present a global-local model reduction for fast multiscale reservoir
simulations in highly heterogeneous porous media with applications to optimization and …

[HTML][HTML] The multivariate theory of connections

D Mortari, C Leake - Mathematics, 2019 - mdpi.com
This paper extends the univariate Theory of Connections, introduced in (Mortari, 2017), to
the multivariate case on rectangular domains with detailed attention to the bivariate case. In …

Fast multiscale reservoir simulations with POD-DEIM model reduction

Y Yang, M Ghasemi, E Gildin, Y Efendiev, V Calo - SPE Journal, 2016 - onepetro.org
We present a global/local model reduction for fast multiscale reservoir simulations in highly
heterogeneous porous media. Our approach identifies a low-dimensional structure in the …