Results 61 to 70 of about 509 (166)
Study on evolution characteristics of coal fracture structure and fluid migration law under the action of water-loaded particles [PDF]
The amorphous particles such as coal rock contained in the coal seam enter the fracture channel with the pressure water during the water injection process, which directly affects the structural characteristics of the fracture channel, and then changes ...
He YANG +5 more
core +1 more source
Study on coating of radar absorbing materials based on radar echo development [PDF]
ObjectiveTo mitigate the negative effects of coating radar absorbing materials on ships, such as a shift in the center of gravity, increased cost and higher maintenance workload, a multi-objective optimization design strategy based on radar echo feature ...
Hanjiang SONG, Simi TANG, Xianbin LI
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Prediction of thermal conductivity of 93W–Ni–Fe alloys in sintering process based on finite element analysis [PDF]
Thermal conductivity is an important thermophysical parameter required for the numerical simulation of constitutive equations. The existing thermal conductivity measurement equipment and methods cannot measure the thermal conductivity of refractory ...
PAN Qian +6 more
core +1 more source
Detection of egg appreance based on Fasternet and YOLOv5 model [PDF]
ObjectiveEfficiently identify eggs with defects on their appearance in the automatic production process.MethodsDesigned a detection model based on fusing Fasternet module and YOLOv5s.
CHEN Zhongju, WEI Jingxin, XU Haoran
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The design and study of induction heating applications on the household SPA system [PDF]
, 2013 针对目前市场上传统的家用休闲疗养温泉系统(SPA系统)安全隐患的现状，本文对电磁感应加热技术应用在家用环境下进行设计与研究，研制成了新型的家用SPA电磁感应加热系统。其宗旨在于彻底解决传统加热方式在家用SPA系统的安全隐患（加热液与加热系统无法完全隔离之双重保护以及传统加热方式长期使用会结垢腐蚀破坏保护层表面）以及加热效率问题，从民用产品的经济品质角度出发，对电磁感应装置及其它应用电磁感应加热技术在此行业中应用设计探讨一种新的思考及实践模式，并以此为基础，从而推动此行业的发展 ...
张英彪
core
Study on the temperature prediction model of residual coal in goaf based on ACO-KELM [PDF]
Existing studies on the temperature prediction of residual coal in goafs have mainly focused on the relationship between temperature and gas concentration, with limited attention given to the complex nonlinear relationships between the residual coal ...
HAO Le +5 more
core +1 more source
Gaoya dianqi, 2021 充油设备如倒置式油浸电流互感器等在运行过程中,因受到电场、磁场等作用下,绝缘油会发生氧化、裂解及碳化,使得某些碳氢键和碳碳键断裂,通过复杂的化学反应重新化合生成一氧化碳、二氧化碳、氢气等气体。由于在研究倒置式油浸电流互感器时,头部因故障产生的气体只能通过在互感器底部取油阀取油样进行色谱分析检测,因此为研究绝缘油中气体从产生到稳定的扩散分布规律,文中通过COMSOL仿真平台,以及有限元分析方法和多物理场耦合分析方法等进行65 k V倒置式油浸电流互感器模型建立研究气体扩散分布规律 ...
季昆玉 +5 more
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Heat and mass transfer of Dioscorea opposita Thunb. cv. Tiegun slices during hot⁃air drying process [PDF]
ObjectiveThis study aimed to investigate the mass transfer of Dioscorea opposita Thunb. cv. Tiegun slices, the heat transfer of the drying space and yam slices.
LI Yu +4 more
core +1 more source
Gaoya dianqi在电力物联网深化综合能源系统变革的背景下，物联网从技术层面为综合能源服务提供了新的驱动力，但对其面向更多元的能源生产与消费情景提出了更多要求。传统微网系统已经难以适应新形势下调节多能耦合，及精准预测调度的愿景。文中以综合能源系统为根基，提出面向电力物联网的综合能源微网框架。指出应用层面要实现经济优化调度、综合能源整体布局和能源交易。提出能源供应商面向市场的上、下两层迭代优化调度的新型策略。根据模型特点，上层是以综合能源供应商利润最大为目标函数的优化调度数学模型，采用MATLAB/CPLEX求解器求解 ...
王勉, 王敬华, 董克前
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Dianci bileiqi, 2023 金属氧化物避雷器由于其优异电气特性，在电力系统中广泛应用。但实际使用过程中，多片ZnO阀片串联组装成的整支避雷器通流能力低于单片ZnO阀片，导致线路保护与设备绝缘的能力降低。大电流作用下的整只避雷器不仅仅受到电流的作用，也会因电流导致避雷器的热变与力变，为了进一步分析金属氧化物避雷器在大电流作用下的情况，在COMSOL有限元分析软件中对避雷器进行了电-热-力多物理场耦合仿真，分析了整支10 kV避雷器在承受峰值100 kA大电流冲击作用下内部电、热、力分布情况 ...
尹肇琦 +4 more
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