JIA XUAN WANG

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Junye Shi

Shanghai Jiao Tong University

Jiangping Chen

University of South China

Chenyi Qian

Shanghai Jiao Tong University

Weicheng Xuan

Shanghai Jiao Tong University

Xiang Qiu

Shanghai Jiao Tong University

Binbin Yu

University of Chinese Academy of Sciences

Binbin Yu

Shanghai Jiao Tong University

Jiangping Chen

Wuhan University

Zekun Jiang

Shanghai Jiao Tong University

Yun Zhang

Rensselaer Polytechnic Institute

Cooperative Institutions

Shanghai Jiao Tong University

Shanghai Ninth People's Hospital

Yonker Environmental Protection (China)

Shanghai Stock Exchange

Center for High Pressure Science & Technology Advanced Research

Huazhong University of Science and Technology

Wuhan University

University of Chinese Academy of Sciences

Guangzhou University

Sichuan University

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Experimental and Numerical Study on Pump-Driven Two-Phase Cooling Loop for High Heat Flux Avionics

SSRN Electronic Journal (2022)

JIA XUAN WANG Junye Shi Jiangping Chen

Aviation applications are facing with cooling problems of high power and high heat-flux electronic equipment. Mechanically pumped two-phase cooling loop (MPTL) system, coupled with micro-channel, has been proved an effective heat dissipation method for high heat flux problems, but its ability and stability in the face of ultra-high power conditions are still untested. This paper constructed a ground test bench of MPTL system and designed a special control strategy for high power system. The cooling ability and resistance characteristics of the system are tested and the mathematical model is summarized. The designed copper-material micro-channel heat sink is able to handle 6kW concentrated heat sources with 120W/cm 2 . The surface temperature of the heating element can be stabilized between 63°C and 70°C, meeting the temperature requirements of a chip, and the temperature is uniform between the evaporator branches. This paper also develops micro-channel boiling heat transfer numerical model which has great consistency with experimental data, and points out the direction for the optimal design of cold plate. This paper also puts forward a new starting method for MPTL. By starting the pump and heat source in advance, the starting time is reduced to 1/8 of the original time.

High heat

10.2139/ssrn.4166330

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Numerical and Visual Performance Investigation of a Plate Heat Exchanger Designed by Topological Optimization

Chenyi Qian JIA XUAN WANG Xiang Qiu Yun Zhang Junye Shi

Enhancing flow distribution to mitigate heat transfer dead zones and intensify heat transfer efficiency constitutes the crux of augmenting the effectiveness of plate heat exchangers (PHEs). To this end, a two-phase fluid topology optimization approach suited for PHE conditions was developed to devise a novel channel structure of topology PHE. Next, 3D printing technology was employed to fabricate topology plate samples, whose geometrical parameters were akin to those of the traditional dimple plates. To compare the performance of the two plate types, CFD simulation, performance experiment, and visual test were implemented. The CFD simulation results showed that compared to the dimple plate, the temperature disparity between the fluid inlet and outlet of the topology plate escalated by 21.8%, the heat transfer coefficient increased by 6.2%, and the pressure drop grew by 7.4%. Moreover, the experimental results demonstrated that the temperature difference between the topology plate inlet and outlet increased by 13.7%, and the pressure drop surged by 16.9%. These results were mainly attributable to the more homogeneous distribution of the two-phase fluid and the reduced flow resistance in the turning area of the topological plate, which were corroborated by the visual test. The discoveries of this study proffer guidelines for future research endeavors aimed at assessing prospective solutions to boost the heat transfer of PHEs and foster their implementation for heat management.

Topology optimization

10.2139/ssrn.4409559

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Optimization of Thermodynamic Properties of Diamond Heat Sink Sheet Based on Magnetron Sputtering

Weicheng Xuan Chenyi Qian JIA XUAN WANG Zekun Jiang Junye Shi

The diamond/Ti/Ni/Au sandwich metallized material was obtained by sputtering 70-200nm Ti coating on the surface of diamond hot sinking sheet and after proper high temperature treatment. The cross section of the coating was studied. The properties of first layer TiC and the effects of diamond surface roughness on mechanical and thermal properties of metallized materials were discussed. The results show that TiC is uniformly located in the interlayer between diamond and Ti under different temperature and time treatment conditions. It is found that the interface bonding force of metallized materials producing TiC is good and meets the requirements of industrial production. Moreover, smooth diamond surface is more beneficial to improve the interfacial adhesion of metallized sandwich materials. In addition, based on the calculation of theoretical model, the thermal resistance of the interface between diamond and TiC is discussed and the thermal expansion coefficient of the metallized material is calculated.

Sink (geography)

10.2139/ssrn.4362476

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Numerical and Experimental Investigation of Additive Manufactured Heat Exchanger Based on Triply Periodic Minimal Surfaces

JIA XUAN WANG Chenyi Qian Weicheng Xuan Xiang Qiu Binbin Yu

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10.2139/ssrn.4765175

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