Results 11 to 20 of about 4,831 (156)
Gaoya dianqi, 2020 电晕是造成车顶绝缘子老化的主要因素之一。基于高速气流试验平台,试验研究了高速气流电晕环境下硅橡胶表面的憎水性分布,通过分析高速气流对电晕放电路径和放电电流的影响,讨论了憎水性分布发生偏移的原因。研究发现:高速气流环境下电晕强度较大时,憎水性丧失最严重的部位沿气流方向发生偏移。其原因是:当电晕放电沿针尖发展至针板间隙空间时,高速气流使得电晕放电路径沿气流方向偏转。气流速度一定时,离子所受电场力随电压的增大而增大,高速气流不易将其吹离针板间隙空间 ...
张晓青 +4 more
doaj
Particle flight behavior in hypersonic flame spraying [PDF]
, 2022 High velocity oxygen fuel (HVOF) coatings have high bonding strengths and compactness, which can improve the wear, corrosion, and fatigue resistance of an underlying matrix.
Feng ZHANG +3 more
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Investigation of behaviour of particle impact on material by impinging jet [PDF]
, 2017 颗粒冲击材料现象广泛存在于自然界以及工业领域中。应用实验测量与数值计算相结合的方法研究了颗粒射流冲击材料(304不锈钢)的磨损行为。考虑了颗粒粒; 径、运动轨迹、颗粒-壁面撞击点分布以及所导致材料物相结构变化。实验测试包括材料质量损耗、材料元素X射线衍射(XRD)分析、表面微观结构扫描电镜(; SEM)观察。对相应的颗粒射流冲击材料行为进行了数值计算,获得流场,颗粒场以及相应材料磨损。结果表明:颗粒射流冲击下颗粒运动轨迹与撞击点的分布不; 同,造成了材料样品表面磨损区域明显不同。颗粒 ...
周芳 +5 more
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Effects on Physicochemical and Dissolution Characteristics of Lentinus edodes Stem Powder by Jet Milling [PDF]
, 2023 In order to increase the utilization rate of shiitake mushroom by-products, the shiitake mushroom stem was crushed after superfine grinding with a jet mill, with coarse powder and 40 mesh powder as the control.
Ben NIU +7 more
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Study on Effective Distance of Supersonic Molecular Beam Injection System for HL-3 Tokamak [PDF]
Supersonic molecular beam injection (SMBI) technology, an indigenous fusion fueling technique in China, have been implemented widespread in international nuclear fusion devices.
XIAO Guoliang1, , CHEN Chengyuan1, LIU Shenghui2, YIN Jiao1, XU Ke1, 3, ZHU Yiren1, WANG Chiyu1, FENG Beibin1, ZHONG Wulv1,
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Research of Resonator-sound-generator Atomizing Nozzle [PDF]
, 2015 喷嘴技术的应用范围几乎包含所有工业领域、农业生产、交通运输以及人们的日常生活。作为必备组件在燃烧装置上的应用尤为重要。以往对于新型的流体动力式超声波雾化喷嘴研究表明：这类喷嘴的雾化粒径小（小于50μm）且分布均匀性好，对实现低氧燃烧、减少烟气中烟尘和氮氧污染物的排放有实质性的意义。因此本文以谐振腔式声能雾化喷嘴为研究对象，通过设计结构，利用FLUENT软件对其流场、声场以及雾化性能进行多参数的数值模拟，通过雾化性能的变化规律分析了其雾化机理。 研究首先基于哈特曼发声哨的原理设计了谐振腔式声能雾化喷嘴 ...
邢盼
core
A Multifunctional Reducing Molecular Dopant for 16% Efficient Tin Perovskite Solar Cells
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Although lead‐based photovoltaics have seen remarkable progress, tin‐based perovskite solar cells (Sn‐PSCs) continue to face challenges due to their limited power conversion efficiency and insufficient operational stability. The primary cause of this performance gap is the susceptibility of Sn2+ to oxidation, which promotes rapid defect ...
Xianyong Zhou +12 more
wiley +1 more source
Numerical Simulation and Performance Analysis of a Scramjet Based on Three Dimensional Design [PDF]
, 2015 本文以超燃冲压发动机为研究对象，将其中的各部件置于整个发动机的大环境下进行了设计与性能分析。 以流线追踪三维Busemann型面作为进气道，研究了其不启动时的流场特征以及非设计点下的性能。随后将该进气道与隔离段模型相结合进行了数值模拟，结果表明增加隔离段长度可提升极限反压，但长度越长，反压比提升的幅度越小；进气道来流的影响使隔离段在反压作用下的流场呈现不均匀性，反压越高，不均匀性越强，进气道所受的压阻也越大。 在燃烧室设计过程中，以均匀来流为条件分别考察了边界层厚度、狭缝抽吸 ...
方骁远
core
Experimental Research of Electrogasdynamic Power Generation With Exposed Electrode Structure Based on Normal Temperature Air [PDF]
In order to explore the influencing factors and laws of the basic process of electrogasdynamic power generation, a simple electrogasdaynamic high-voltage power generation test device with exposed electrode structure was designed based on the basic theory
KE Minghui, LAI Lin
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Developing low‐energy‐input electrocatalytic systems for efficient hydrogen production is crucial for advancing sustainable energy technologies. The overall hydrazine splitting (OHzS) has emerged as a promising strategy to reduce the overall energy consumption by replacing the sluggish oxygen evolution reaction.
Haozhou Chen +13 more
wiley +1 more source