Results 11 to 20 of about 264,486 (265)

Dislocation-related leakage-current paths of 4H silicon carbide

open access: yesFrontiers in Materials, 2023
Improving the quality of 4H silicon carbide (4H-SiC) epitaxial layers to reduce the leakage current of 4H-SiC based high-power devices is a long-standing issue in the development of 4H-SiC homoepitaxy.
Wandong Gao   +13 more
doaj   +1 more source

Effect of hydraulic and geometric factors upon leakage flow rate in pressurized pipes

open access: yesRBRH, 2021
Computational Fluid Dynamics (CFD) simulations of a leakage in a pressurized pipe were undertaken to determine the empirical effects of hydraulic and geometric factors on the leakage flow rate.
Mayara Francisca da Silva   +2 more
doaj   +1 more source

Experimental investigation on the influence of bristle lay angle on the leakage characteristics of low hysteresis brush seals

open access: yesAIP Advances, 2021
The leakage characteristics and hysteresis effect were experimentally studied on three test pieces of a low hysteresis brush seal with bristle lay angles of 40°, 45°, and 50°.
Yaping Hu   +5 more
doaj   +1 more source

Drainage effects in water supply canals

open access: yesYantu gongcheng xuebao, 2020
In view of the various engineering damage problems caused by leakage in ZG canal, it is proposed to set up a drainage system to drain the leaking water during the operation period.
RUAN Xin-min
doaj   +1 more source

Study on the influence mechanism of air leakage on gas extraction in extraction boreholes

open access: yesEnergy Exploration & Exploitation, 2022
Borehole leakage is an important cause of gas extraction failure. In order to study the influence mechanism of borehole leakage on gas extraction, the borehole air leakage mode was studied, and a mathematical model was established to describe the ...
Xuebo Zhang   +3 more
doaj   +1 more source

Parametric Analysis of Gas Leakage in the Piston–Cylinder Clearance of Reciprocating Compressors

open access: yesMachines, 2022
Gas leakage is one of the main sources of inefficiencies in low-capacity reciprocating compressors, undermining the compressor performance by reducing the mass flow rate and increasing the energy consumption.
Vitor M. Braga, Cesar J. Deschamps
doaj   +1 more source

Water Storage Variations in Tibet from GRACE, ICESat, and Hydrological Data

open access: yesRemote Sensing, 2019
The monitoring of water storage variations is essential not only for the management of water resources, but also for a better understanding of the impact of climate change on hydrological cycle, particularly in Tibet.
Fang Zou, Robert Tenzer, Shuanggen Jin
doaj   +1 more source

Traditional Leakage Models for Leakage Modelling: Effective or Not?

open access: yesProcedia Engineering, 2015
AbstractAccurate models are critical for the effective management of leaks in our water distribution systems. The increased use of plastic pipes has emphasised the need to assess the ability of current leakage assessment tools in quantifying the real losses from complex time and pressure dependent leaks.
Fox, Sam, Collins, Richard, Boxall, Joby
openaire   +1 more source

Non-Distorted Optimization Spectrum Analysis

open access: yesEnergies, 2018
The discrete Fourier transform is extensively applied in spectrum analysis. However, the sampled signal is random, and the discrete Fourier transform has its own specific limitations.
Rong-Ching Wu, Li-Ju Huang
doaj   +1 more source

Leakage Analysis of PEMFC Sealing System Considering Temperature Cycling

open access: yesEnergies, 2023
Addressing the leakage rate prediction problem of the PEMFC sealing system is of great importance for its stable operation. The leakage calculation method of the PEMFC sealing system is proposed based on thermal coupling. The parallel plate leakage model
Zhi Chen   +4 more
doaj   +1 more source

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