Numerical Investigation of Jet Impingement Cooling with Supercritical Pressure Carbon Dioxide in a Multi-Layer Cold Plate during High Heat Flux

作     者：WEN Yaming LI Yulong LI Jingqi YU Xin-Gang 

作者机构：National Key Laboratory of Science and Technology on Aero Engines Aero-Thermodynamics&Collaborative Innovation Center for Advanced Aero-EngineSchool of Energy and Power EngineeringBeihang UniversityBeijing 100191China Beijing Institute of Spacecraft System EngineeringBeijing 100094China 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2023年第32卷第1期

页      面：237-253页

核心收录：

学科分类：080702[工学-热能工程] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the Ministry of Science and Technology the National Key Research and Development Program of China under Grant No.2016YFE0201200 

主　　题：high heat flux jet impingement cooling supercritical pressure carbon dioxide heat transfer enhancement 

摘      要：Jet impingement cooling with supercritical pressure carbon dioxide in a multi-layer cold plate during the heat flux of 400 W/cm_(2) is investigated *** generation and distribution of pseudocritical fluid with the high specific heat of supercritical pressure carbon dioxide and the mechanism of the heat transfer enhancement led by the high specific heat are *** a given nozzle diameter,the effects of the geometric parameters of a multi-layer cold plate such as the relative nozzle-to-plate distance,relative plate thickness,and relative upper fluid thickness on the average heat transfer coefficient are *** results show that the target surface is cooled effectively with supercritical pressure carbon dioxide jet impingement *** the radial distance is less than 6 mm,the maximum wall temperature is 368 K,which is 30 K lower than the maximum junction temperature for a silicon-based insulated gate bipolar transistor,a typical electronic power *** is a pseudocritical fluid layer near the target surface,where specific heat reaches above 34 kJ/(kg·K)*** drastic rise of the specific heat leads to obvious heat transfer *** a certain range,the local heat transfer coefficient and the specific heat are linearly correlated and Stanton number remains constant over this *** heat transfer coefficient is at a maximum when the relative nozzle-to-plate distance is *** the relative plate thickness increases from 0.5 to 3.5 or the relative upper fluid thickness increases from 0.5 to 2.5,the average heat transfer coefficient decreases monotonically.