Results 21 to 30 of about 457 (150)
Calculation of the influence of argon-to-hydrogen mole ratio on the discharge characteristics of plasma in DC arc plasma jet [PDF]
, 2016 The effect of argon-to-hydrogen mole ratio on the discharging behavior of argon-hydrogen plasma was simulated and studied on the assumption that argon-hydrogen plasma is in a local thermodynamic equilibrium.
CHEN Liang-xian +6 more
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Research of Neutron-thermal Hydraulic Coupling Calculation Method in Fast Reactor Code System MOSASAUR [PDF]
The nuclear reactor core is a highly heterogeneous system where various physical phenomena are interrelated and coupled. The complex coupled interaction necessitates multi-physics calculations to realize more accurate and realistic simulations in core ...
ZHANG Bin, WANG Lianjie, LOU Lei, ZHAO Chen
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Review on the progress for physical simulation for gas reservoirs co-production in multi-pressure system [PDF]
, 2023 The gas reservoirs co-production in multi-pressure system is one of the important measures to improve the development efficiency of the superposed gas-bearing systems.
Fazhi YAN +5 more
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Dianci bileiqi, 2018 系统综述了基于数值仿真计算技术在金属氧化物避雷器（metal-oxide surge arresters,MOA）研究中的应用发展。共分3个方面:1)基于等效电路模型的数值仿真计算;2)基于电、机械与热的两或多物理量（场）耦合的金属氧化物电阻片（metal-oxide surge varistor,MOV）数值仿真计算;3)整只MOA的电场、温度场或多物理场耦合的数值仿真计算。对于MOV的建模和仿真计算,将来主要的努力方向是改进数学计算模型,以便可以描述ZnO晶界与时间和温度相关的特性 ...
赵冬一, 李凡, 汤霖
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Scientific problems and key technologies for safe and efficient mining of deep coal resources [PDF]
Under the international background of the unprecedented great change and accelerated evolution in a century, China’s energy industry is facing the dual challenges of the realization of the “double carbon” strategic goal and the stable supply of energy ...
Liang YUAN +5 more
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Gaoya dianqi, 2022 低压预制母线用于10 kV柱上变压器的二次侧，是一体化改造的重要举措，而研究其温升特性具有重要意义。论文主要选取额定电流为630 A的低压预制母线作为研究对象，首先建立了其三维几何模型，采用电磁场—温度场以及电磁场—气流场—温度场耦合的多物理场模型，对其展开了仿真研究，并与型式试验结果进行了对比，验证了仿真结果的正确性。处于自然对流条件下的预制母线采用电磁场-温度场耦合模型，处于强制对流条件下的预制母线采用电磁场—气流场—温度场耦合模型。同时，文中仿真分析了不同负载情况下的预制母线温升分布情况 ...
古海良 +10 more
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Model and numerical solution method the failure of air volume and air flow components in the ventilation network during the period of external fire [PDF]
In order to eeproduced as much as possible the disaster processes such as air volume fluctuations, airflow reversal, abnormal airflow temperature, the spread of toxic and harmful smoke, and the decrease in oxygen volume fraction in the ventilation ...
Lang ZHANG, Wei LI, Yanqing LIU
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Gaoya dianqi, 2019 温升是影响油浸式变压器正常运行的重要因素,为了得到变压器的温度场分布,提出一种基于混合方法的多物理场计算方法。对于油浸式变压器流体场和温度场的强耦合问题,混合方法考虑了温度对媒质物性参数的影响,采用迎风有限体积法和迎风有限元法依次计算流体场和温度场,即流体场和温度场依次循环求解,最终得到油浸式变压器启动过程瞬态温度场和稳态温度场。为了验证文中算法的有效性,采用换流变压器二维简化模型,分别采用文中方法和多物理场仿真软件Comsol计算了常温下的稳态温度场,计算结果验证了混合方法的准确性和有效性 ...
刘刚 +4 more
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Development of a damage model for rapid decompression of O-ring seals in high-pressure and long-distance CO2 pipelines [PDF]
ObjectiveLong-distance pipelines are essential for large-scale CO2 transportation within the Carbon Capture, Utilization, and Storage (CCUS) system, where the reliability of sealing systems directly influences safety and efficiency.
Changjun LI +5 more
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Guangtongxin yanjiu, 2018 采用三维结构光子器件可以实现多维度的空分复用,即并行处理多路信号,从而增加传输容量,提高集成密度。文章根据三维多模干涉耦合器的自成像原理,设计了一种易于集成的三维模式转换分束器。该分束器可以将输入的基模光场转换为3个基模光场和3个一阶模光场输出。用聚合物材料设计并优化得到多模波导的长、宽和高分别为3 398.17、50.00和29.37μm。模拟结果显示,在1 550nm波长时的总传输效率为85.5%,其中基模输出光场的传输效率为28.9%,最大不均衡性为0.010dB;一阶模输出光场的转换效率为56 ...
张云超 +4 more
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