Results 81 to 90 of about 457 (150)
Gaoya dianqi, 2023 气体绝缘金属封闭开关（GIS）中的母线触头弹簧触指热故障频发，甚至引起弹簧触指烧断并诱发击穿事故。文中构建了弹簧触指的三维电热机多物理场耦合仿真模型，首先基于经典Cooper-Mikic-Yovanovich(CMY)理论计算接触电导与接触热导，研究了考虑导杆重力作用下的弹簧触指温升分布，其次通过真型试验进行模型验证，最后基于仿真计算分析了不同损伤状态下的弹簧触指温升分布，分析了损伤程度与损伤范围的影响，仿真结果与母线弹簧触指热故障的普遍特征吻合。文中对母线触头弹簧触指热故障排查分析 ...
马金财, 刘刚, 何龙
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Immunomagnetic Separation of Salmonella Typhimurium Based on Microfluidic Chip [PDF]
This study developed an immunomagnetic separation microfluidic system for rapid isolation and enrichment of Salmonella typhimurium. The system consisted of a microfluidic chip, a microcontroller, and an electromagnetic separation and mixing module, which
JIN Yan, WANG Jingyi, CHENG Jianing, YU Lemin, ZHANG Bichen, ZHANG Yibo, XU Tongyu
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Comparative study on effect of microstructure characteristics on adsorption of CH4 and CO2 in anthracite based on molecular simulation [PDF]
In order to explore the effects of pore size, aromatic lamellar stacking degree, aromatic lamellar ductility, gas temperature and gas pressure on the competitive adsorption of CH4 and CO2, the No.3 coal from Jincheng mining area was taken as the research
Bing SHAO +6 more
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Mechanical model of deformation-seepage-erosion for Karst collapse column water inrush and its application [PDF]
With the extension of coal mining in China, fault water inrush has become one of major disasters threatening the safety of coal mine production. Based on the research results related to the mining-induced fault water inrush, this paper proposes a ...
Banghua YAO +6 more
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Kongjian kexue xuebao当前业务中对未来3天Kp指数预报需求强烈. 但地磁暴中多参数耦合导致难以量化各预报因子对Kp值的贡献, 制约了预报精度提升. 本文构建了神经网络3天Kp指数预报模型, 并使用人工智能(AI)可解释性算法定量化各因子贡献. 结果显示, 行星际磁场南向分量在提前3 h对Kp指数的贡献为37.15%, 为主要因子, 说明模型能捕捉符合物理特征的主要预报因子.
王 听雨 +5 more
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A survey on intelligent computing interconnection [PDF]
As model parameters surpass the trillion-scale mark, intelligent computing interconnection faces technical challenges including ultra-large-scale networking, low-latency communication, and high-bandwidth synchronization multidimensional evaluation.
CHEN Yongming +3 more
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Current status and prospects of technological development for batch transportation of methanol via product oil pipelines [PDF]
ObjectiveWith the accelerated implementation of carbon peaking and carbon neutrality strategies, the consumption mix of traditional oil and gas resources has undergone significant changes, reflected in a slowing growth rate of oil and gas demand and a ...
Kuirong LIU, Weibin WANG, Yuxing LI
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Gaoya dianqi高压气体绝缘开关设备（GIS）在运行时易产生外壳环流，这会致使设备过热并加速绝缘材料老化。环流还可能干扰测量和保护装置，从而降低系统的供电可靠性。本文针对某±200kV换流站的GIS，研究其结构，深入分析感应电压产生和环流形成的机理；提出面向GIS设备外壳环流分析的场-路耦合模型，以及GIS相间汇流排电磁-流-热多物理场耦合模型；通过分析GIS外壳的感应电压产生机理以及环流路径，研究GIS在不同运行工况、不同接触电阻条件下的外壳环流分布和汇流排温度分布规律；通过与现场试验结果的比较 ...
茅鑫同 +7 more
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Microwave drying kinetic characteristics of yellow phosphorus-like materials [PDF]
Yellow phosphorus is an important industrial raw material used in pharmaceuticals, food, pesticides, the military, and the chemical industry, significantly impacting the economy.
hang LI, jiayu HE, lei XU, yongfen SUN
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Gaoya dianqi, 2016 为更准确地掌握树脂浇注干式变压器的内部温度场分布,为变压器的绝缘寿命评估提供依据,在分析变压器产热散热机理及导热途径的基础上,依据干式变压器的实际对流传热和热辐射特性及温度场计算的流固耦合模型,在多物理场仿真软件COMSOL中实现了树脂浇注干式变压器温度场分布的建模计算,得到了干式变压器铁心和绕组的温度分布。同时将计算结果与干式变压器温升试验实测数据进行了对比,两者吻合较好,误差±5.5%,说明了计算结果的正确性。此外,计算结果表明:干式变压器绕组和铁心底部到顶部的温度分布呈现低—高—低走势 ...
刘国坚, 王丰华
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