Results 31 to 40 of about 11,269 (260)

Deep Graph Learning-Based Surrogate Model for Inverse Modeling of Fractured Reservoirs

open access: yesMathematics
Inverse modeling can estimate uncertain parameters in subsurface reservoirs and provide reliable numerical models for reservoir development and management. The traditional simulation-based inversion method usually requires numerous numerical simulations,
Xiaopeng Ma   +4 more
doaj   +1 more source

Self-organized criticality in fracture models at different scales

open access: yesExamples and Counterexamples, 2022
Although modeling of fractures in solid materials has been within the focus of researchers for decades, a generally applicable and reliable numerical description is still an open topic.
Yousef Heider   +3 more
doaj   +1 more source

Analysis of crack propagation in a “pull-out” test

open access: yesStudia Geotechnica et Mechanica, 2019
The article describes a computer analysis of the pull-out test used to calculate the force needed to pull out a rock fragment and determine the shape of this broken fragment. The analyzed material is sandstone and porphyry.
Gontarz Jakub, Podgórski Jerzy
doaj   +1 more source

Fracture Failure of Reinforced Concrete Slabs Subjected to Blast Loading Using the Combined Finite-Discrete Element Method

open access: yesLatin American Journal of Solids and Structures
Numerical modeling of fracture failure is challenging due to various issues in the constitutive law and the transition of continuum to discrete bodies.
Z. M. Jaini   +3 more
doaj   +1 more source

Numerical modeling of structural fracture processes for granular composites with isotropic elements of structure

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011
Presents the results of numerical modeling of deformation processes, and processes of micro- and macrodestruction for granular composites. Detail discussed failure mechanisms at the structural level. Detected the effect of self-sustaining fracture.
A. V. Il'inykh
doaj   +3 more sources

Direct numerical simulation of matrix diffusion across fracture/matrix interface

open access: yesWater Science and Engineering, 2013
Accurate descriptions of matrix diffusion across the fracture/matrix interface are critical to assessing contaminant migration in fractured media. The classical transfer probability method is only applicable for relatively large diffusion coefficients ...
Yong Zhang   +3 more
doaj   +1 more source

Coupled Hydraulic Fracture and Proppant Transport Simulation

open access: yesEnergies, 2020
This paper focuses on the study of proppant transport mechanisms in fractures during frac-packing operation. A multi-module, numerical proppant, reservoir and geomechanics simulator has been developed, which improves the current numerical modeling ...
Morteza Roostaei   +3 more
doaj   +1 more source

Numerical modelling of deformation and fracture in geomaterials

open access: yesФизическая мезомеханика, 2004
The processes of localized deformation band formation and crack generation in brittle-plastic materials are simulated numerically in various loading conditions. The patterns of cracking and strain localized band for a sandstone specimen in compression are obtained.
Stefanov, Yu, Evseev, V., Bakeev, R.
openaire   +2 more sources

Ofatumumab in Myelin Oligodendrocyte Glycoprotein Antibody–Associated Disease: A Comparison With Rituximab

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To evaluate the efficacy and safety of ofatumumab in patients with myelin oligodendrocyte glycoprotein antibody–associated disease (MOGAD), and compare it with rituximab. Methods We conducted a single–center, observational study including 22 MOGAD patients treated with ofatumumab and 21 treated with rituximab.
Yuxin Fan   +5 more
wiley   +1 more source

Experimental and Numerical Investigation of Rock Dynamic Fracture [PDF]

open access: yesInternational Journal of Mining and Geo-Engineering, 2017
Rapid development of engineering activities expands through a variety of rock engineering processes such as drilling, blasting, mining and mineral processing.
Aliasghar Mirmohammadlou   +3 more
doaj   +1 more source

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