Results 21 to 30 of about 26,558 (265)

Study on permeability improvement and gas extraction by coal seam hydraulic fracturing based on PFC2D-COMSOL numerical simulation

open access: yesMeikuang Anquan, 2022
In order to study the gas drainage effect after hydraulic fracturing, PFC2D numerical simulation is combined with COMSOL numerical simulation, and a geometric model image pixel level processing method is proposed.
WANG Shibin   +4 more
doaj   +1 more source

SAW devices on frequency harmonics. Features of calculation of SAW parameters by the finite element method [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Физика
Background and Objectives: Acoustoelectronic devices (filters, delay lines, resonators, etc.) are used in a wide range of applications in various industries. Surface acoustic waves (SAW) filters are key elements of wireless communication systems, such as
Koigerov , Aleksey Sergeevich
doaj   +1 more source

Simulation and Experimental Investigation of a Hollow, Bipolar Needle Electrode

open access: yesCurrent Directions in Biomedical Engineering, 2021
Localized impedance measurements at the needle tip identifying the present tissue type could aid clinicians in needle procedures. To assess the sensitivity field of a hollow, bipolar needle electrode, a 3D finite element approach using COMSOL ...
Liu Jan   +4 more
doaj   +1 more source

Reconstruction and seepage simulation of coal and rock pore fracture structure based on CT imaging

open access: yesMeikuang Anquan, 2021
In order to explore the seepage characteristics of coal seam pressure water injection under different permeability and fracture conditions, CT scanning technology was used to scan coal samples and obtain the original image. The noise points are filtered
LIU Weifu, DING Xuhai, ZHOU Guang
doaj   +1 more source

Multi-Physical Field Coupling Simulation of Φ100 Cold Crucible-Glass Solidification High Frequency Power Supply

open access: yesYuanzineng kexue jishu, 2023
High-frequency power supply is an important component of high-discharge glass curing systems for high level radioactive waste (HLLW) of cold crucibles, but because the parameters of each set of high-frequency power supply are not adjustable from the ...
WANG Zexue;LI Yusong;ZHU Dongdong;ZHANG Anqi;HONG Ye;LONG Haoqi;ZHANG Shengdong
doaj  

Exploring Multi-Scale Thermal Behaviour in Pin-on-Disc Systems for Organic, Metallic, Ceramic, and Polymer Composites [PDF]

open access: yesMechanics of Advanced Composite Structures
This paper presents a multi-scale strategy for the thermal simulation of frictional systems, such as brakes, considering the microscale properties of the polymer composites.
Hemant Nagoriya, Gaurav Arora
doaj   +1 more source

A numerical study on effective parameters on the thermal interaction of energy pile group [PDF]

open access: yesمهندسی عمران شریف, 2023
Global population growth and industrialisation over the past two centuries have been increased the tendency toward increased use of fossil fuels. The rising trend in greenhouse gas emissions brought on by the usage of fossil fuels has contributed to ...
M.I. Danish   +2 more
doaj   +1 more source

Mode I and Mode II Fracture Toughness of Fe-based Amorphous Materials: Theoretical and Empirical Investigations [PDF]

open access: yesJournal of Applied and Computational Mechanics
This study investigates a diagonally loaded square plate specimen's fracture toughness. The specimen has central pre-crakes under loading modes I and II. Iron-based amorphous material with high strain-hardness (200 to 500 MPa) and malleability (10% to 50%
Hamid Al-Abboodi, Mortadha Razzaq
doaj   +1 more source

Modeling and Simulation of Reacting Systems: A COMSOL Multiphysics Approach for Chemistry Education

open access: yesCHIMIA
This article presents a comprehensive overview of modeling and simulation strategies for chemically reacting systems using the COMSOL Multiphysics®software, with a focus on applications in chemical engineering and chemistry education.
Ed Fontes
doaj   +1 more source

Three-dimensional Numerical Simulation of Water, Heat and Oxygen Distribution in Soil in Orchard Irrigated by Water Storage Pit

open access: yesGuan'gai paishui xuebao, 2023
【Objective】 Water storage pit is a technology used in arid regions in northwestern China to collect rainwater for irrigation. In this paper, we studied the three-dimensional distribution of water, heat and oxygen in soil in an orchard under water storage
SU Yuanyuan   +6 more
doaj   +1 more source

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