Results 91 to 100 of about 509 (166)
Study on Coupled Multi-behavior Analysis Method for Graphite Dust Migration in Primary Loop of HTGR [PDF]
In high-temperature gas-cooled reactors (HTGR), the motion of pebble flow within the core induces friction between graphite materials, inevitably generating graphite dust.
CAO Chenghao, CHEN Junyi, SHEN Shaoning, LIANG Jingang, LI Chuan, CAO Jianzhu
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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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Progress in phase field research of dead lithium in lithium batteries [PDF]
In recent years, the increase in people’s demand for energy has led to the development of secondary batteries. Because of its high theoretical capacity and low electrochemical potential, lithium metal has gradually become the preferred negative electrode
Huiyi CHEN, Huiyu LIU, Jing LIU, Shu LI
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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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Microscopic fracture characterization and permeability evolutionary patterns of granites under cyclic thermal shock [PDF]
ObjectiveThis study aims to reveal the microscopic damage characteristics and permeability evolutionary patterns of high-temperature granite reservoirs fractured under cyclic thermal shock produced by low-temperature fluids like drilling fluids and ...
Chengcheng REN +5 more
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Mechanisms and collaborative prevention and control techniques for various disasters in coal seam roofs [PDF]
ObjectiveThe multistage sedimentary and tectonic evolution of coal seams in China has led to the formation of environments with the coexistence of multiple disasters including gas outbursts, water inrushes, and rock bursts. To address the chain evolution
Dongdong CHEN +4 more
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基于三维电磁-热-流耦合方法的换流变阀侧干式套管插接结构过热性故障研究
Dianci bileiqi, 2019 换流变压器阀侧干式套管采用表带触指作为导体的连接和载流结构,随着输送功率的提高,套管载流量不断提升,插接结构的接触电阻发热将影响套管的可靠运行。针对±500kV换流变阀侧干式套管,通过三维有限元分析耦合电磁、热、流等多物理场,考虑热传导、热对流和热辐射的影响,计算分析了插接结构发热情况下套管的温度场分布以及接触电阻不同程度劣化对套管热场分布的影响。结果表明:接触电阻劣化会引起插接结构局部过热,最终导致环氧芯体与导电管界面温度上升,影响套管安全稳定运行。同时 ...
张晋寅 +6 more
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2019年第一届电力装备绝缘与放电计算学国际研讨会第二轮会议通知
Gaoya dianqi, 2019 尊敬的各位专家学者:能源结构转型和可再生能源大规模开发利用促使电网系统开始进行新一轮的重大变革,特别是以多端柔性直流输配电技术为代表的新技术的快速发展,不断催生出大量新型的电力装备。同时,由于电力装备的工作场景复杂,往往涉及绝缘与放电中的多物理场耦合过程,还涉及到电磁场、放电等离子体等复杂现象与材料的相互作用,导致目前电力装备的研发与设计周期较长,研发成本较高。能否获得更为准确的计算方法,以缩短电力装备的设计研发周期、降低研发成本 ...
doaj
Gaoya dianqi磁开关具有高重频、长寿命和高平均功率等优点，能够实现脉冲前沿的压缩，已广泛应用于脉冲功率系统。目前磁开关的设计是采用伏秒积分方程确定磁芯结构体积以及绕组的匝数，设计时的精度不高。通过测量铁基纳米晶磁芯的脉冲磁化特性，据此使用多物理场仿真软件Comsol建立了考虑磁芯饱和过程的磁开关场路耦合模型，通过100 kV级的高压脉冲压缩实验，验证了仿真模型的准确性与有效性。利用磁开关仿真模型分析了磁芯的饱和时间以及杂散参数对磁开关输出波形的影响，完成了磁芯饱和时间以及减小磁开关杂散参数的优化设计 ...
江进波 +5 more
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[Nanomaterial-driven Lateral Flow Immunoassay: Technological Development and Application]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanZheng J, Hu X, Gu B.
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