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Numerical Research on the Influence of Deborah Number on Flow and Heat Transfer of Maxwell Fluid in a Tube with Laminar Pulsating Flow;德博拉数对圆管内Maxwell型粘弹性流体层流脉动流动和换热的影响
Authors: WANG Zhipeng,ZHUO Yuqun,CHENG Shuhao
Institution:Tsinghua University
Keywords:Maxwell fluid, pulsating flow, Hagen-Poiseuille law, Deborah number, start-up flow
doi:https://doi.org/10.1007/s11630-019-1157-x
Volume 29, Issue 4: 972-981, 2020 | PDF
Article
Published: July 5, 2020
Views:14
Abstract: 中文导读—本文研究了圆管内Maxwell流体脉动层流流动和换热特性。将脉动流动方程无量纲化,求得了正弦型脉动压力梯度下流场的理论解。换热边界条件采用第三类,温度场采用有限容积法进行求解。德博拉数(De)表征流体适应外加应力所需时间的松弛时间比。研究了De对速度场和轴向以及截面温度场的影响。研究了De对换热努塞尔数以及Maxwell流体起动流的影响。发现De对温度场的影响小于对速度场的影响,D...
Heat Transfer Performance of Microgroove Back Plate Heat Pipes with Working Fluid and Heating Power;微槽背板热管工质和加热功率对传热性能影响的实验及模拟分析
Authors: WU Yanpeng,JIA Jie,TIAN Dongmin
Institution:University of Science and Technology Beijing
Keywords:microgroove back plate heat pipes, working fluids, filling ratio, heat power
doi:https://doi.org/10.1007/s11630-020-1336-9
Volume 29, Issue 4: 982-991, 2020 | PDF
Article
Published: July 5, 2020
Views:18
Abstract: 中文导读—针对数据中心高热流密度电子元器件的散热问题,微热管冷却是目前最有效的方法之一,提高微槽背板热管的换热性能十分必要。本文通过实验和数值模拟的方法探究了热管的不同工质、不同充液率和加热功率等因素对热管热阻和等效换热系数的影响,通过对比二氧化碳工质和丙酮工质热管在不同工况下的热阻,发现填充工质为二氧化碳时,热管的热阻减小了14.8%,换热效果更好。同时确定了以二氧化碳作为工质的微槽背板热...
Thermal Analysis and Validation of GF-4 Remote Sensing Camera;GF-4 卫星遥感相机的热分析与验证
Authors: LI Shiqi,WANG Yue,ZHANG Heng
Institution:Huazhong University of Science and Technology
Keywords:thermal control system, geostationary orbit, thermal design, optical remote sensor
doi:https://doi.org/10.1007/s11630-020-1230-5
Volume 29, Issue 4: 992-1000, 2020 | PDF
Article
Published: July 5, 2020
Views:22
Abstract: 中文导读—中国GE-4卫星遥感器搭载了一台空间分辨率为50米可见光/近红外波段和400米中红外波段的卫星相机,它是目前地球静止轨道上分辨率最高的民用卫星遥感器。为了实现卫星相机高分辨率、高灵敏度的需求,卫星遥感器的热设计面临了极大的挑战。本文介绍了GF-4卫星相机的热分析与试验过程,通过计算发现地球静止轨道上工作的卫星遥感器将经历复杂、交变的外热流并面临直射光照的外部环境,采用有限元方法计算...
Experimental Study on Thermal Management of Cylindrical Li-ion Battery with Flexible Microchannel Plates;柔性微通道板内圆柱形锂电池热管理实验研究
Authors: WEI Liting,JIA Li,AN Zhoujian
Institution:Beijing Jiaotong University
Keywords:thermal management, Li-ion battery, flexible microchannels, contact area
doi:https://doi.org/10.1007/s11630-020-1331-1
Volume 29, Issue 4: 1001-1009, 2020 | PDF
Article
Published: July 5, 2020
Views:20
Abstract: 中文导读—本文建立了一种新型的柔性微通道板内液体冷却的圆柱形锂电池热管理系统。实验中柔性微通道板内使用的是制冷剂R141b。通过柔性铝微通道内的R141b的流动沸腾换热带走电池放电产生的热量。本文电池组由五个电池串联组成,研究了不同接触面积和质量流量对电池组的热性能和电化学性能的影响。并且对比了三种不同接触面积的结构与无冷却结构的影响。实验表明,在相同放电速率下,入口质量流量范围在0~10k...
Heat Transfer Enhancement of an Automobile Engine Radiator using ZnO Water Base Nanofluids
Authors: Muhammad QASIM,Muhammad SAJID KAMRAN,Muhammad AMMAR
Institution:University of Engineering and Technology
Keywords:ZnO, nanoparticles, heat transfer enhancement, thermal efficiency, automobile radiator
doi:https://doi.org/10.1007/s11630-020-1263-9
Volume 29, Issue 4: 1010-1024, 2020 | PDF
Article
Published: July 5, 2020
Views:12
Abstract: In this research paper, the forced convective heat transfer enhancement of a Suzuki Mehran (VXR) 2016 radiator (heat exchanger) along with pressure drop and friction factor by utilizing Zinc oxide ...
Volume 29, Issue 3: 609-622, 2020 | PDF
Article
Published: May 5, 2020
Views:52
A Method to Measure Thermal Conductivity of Vacuum Insulation Panel Using Enhanced Extreme Learning Machine Model;一种采用改进极限学习机模型测量真空绝热板导热系数的方法
Authors: XIA Rongfei,CHEN Yifei,FENG Yongjian
Keywords:vacuum insulation panel, thermal conductivity, extreme learning machine, ridge regression
doi:https://doi.org/10.1007/s11630-020-1213-6
Volume 29, Issue 3: 623-631, 2020 | PDF
Article
Published: May 14, 2020
Views:134
Numerical Simulation of Dual-Phase-Lag Model and Inverse Fractional Single-Phase-Lag Problem for the Non-Fourier Heat Conduction in a Straight Fin;直肋非傅立叶热传导的双相滞后模型及分数阶单相滞后反问题的数值模拟
Authors: MOZAFARIFARD Milad,AZIMI Aziz,MEHRZAD Salem
Keywords:non-Fourier heat transfer, fractional calculus, inverse heat transfer, Levenberg-Marquardt, straight fin, unsteady boundary condition
doi:https://doi.org/10.1007/s11630-019-1137-1
Volume 29, Issue 3: 632-646, 2020 | PDF
Article
Published: May 5, 2020
Views:72
Investigation of Heat Transfer Augmentation between the Ribbed Plates via Taguchi Approach and Computational Fluid Dynamics;用计算流体力学研究加筋板间的传热强化
Authors: GOKTEPELI Ilker,ATMACA Ulas,CAKAN Abdullah
Keywords:CFD, heat transfer, Nusselt number, parallel plate, Reynolds number, rib, Taguchi approach, turbulent flow
doi:https://doi.org/10.1007/s11630-019-1155-z
Volume 29, Issue 3: 647-666, 2020 | PDF
Article
Published: May 5, 2020
Views:178
Experimental Analysis of Atypically Long Finned Oscillating Heat Pipe for Ventilation Waste Heat Recovery Application;异型长翅片振荡热管在通风余热回收中的应用试验分析
Authors: MAHAJAN Govinda,CHO Heejin,SMITH Aaron
Keywords:oscillating heat pipe, waste heat recovery, ventilation
doi:https://doi.org/10.1007/s11630-019-1178-5
Volume 29, Issue 3: 667-675, 2020 | PDF
Article
Published: May 5, 2020
Views:38