Results 21 to 30 of about 90,478 (272)

Vibration analysis of functionally graded materials for cylinder liner used in agricultural engine part

open access: yesOpen Agriculture, 2019
The engine part is one of the major sources of vibration of agricultural machinery such as a tractor. Therefore, vibration analysis of agricultural engine part will improve the engine efficiency and agricultural performance. The main objective of present
Prakash Anand   +2 more
doaj   +1 more source

بهینه‌یابی انرژی گنبدهای آب انبارها؛ نمونه موردی: گنبدهای شهر قزوین [PDF]

open access: yesمعماری و شهرسازی ایران, 2022
آب‌انبارها علاوه بر مناطق گرم و خشک، در مناطق سرد کشورمان نیز مورد استفاده عموم قرار می‌گرفته است. یکی از اصلی‌ترین عنصر آب‌انبارها پوشش مخزن آن‌هاست، که از طاق‌های آجری گوناگون مانند آهنگ، کلنبو با خیز و فرم‌های متفاوت ساخته ‌شده است.
توحید شیری   +2 more
doaj   +1 more source

Static Charge Generation Assessment in the Transport Process of Aviation Liquid Fuel Tetralin [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering
Tetralin, as a novel aviation liquid fuel, suffers from low electrical conductivity and causes some hazards during industrial processes. The transfer process of the organic liquid with low electrical conductivity in an L-shaped tube was simulated in this
Sajjad Rezaee   +2 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

Modeling of Coal Spontaneous Fire in A Large-Scale Stockpile

open access: yesInternational Journal of Technology, 2023
The increasing need for energy consumption has resulted in the use of energy sources in coal continuing to increase. The transportation and distribution activities of coal also cause the pile to be exposed to heat when it is in a pile.
Jeri At Thabari   +4 more
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  

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

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

Perturbing open cavities: Anomalous resonance frequency shifts in a hybrid cavity-nanoantenna system [PDF]

open access: yes, 2015
The influence of a small perturbation on a cavity mode plays an important role in fields like optical sensing, cavity quantum electrodynamics and cavity optomechanics. Typically, the resulting cavity frequency shift directly relates to the polarizability
Doeleman, Hugo M.   +4 more
core   +3 more sources

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