Heat Transfer Characteristics outside the Condenser of a Rotating Heat Pipe Grinding Wheel with a Lateral Air Impinging Jet  

作　　者：CHEN Jiajia ZHANG Liyong FU Yucan QIAN Ning JIANG Huafei YANG Lin 

机构地区：[1]College of Mechanical and Electronic Engineering,Nanjing Forestry University,Nanjing 210037,China [2]College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China [3]Jiangsu Wind Power Generation Engineering&Technology Center,Nanjing 210023,China

出　　处：《Journal of Thermal Science》2021年第2期493-503,共11页热科学学报（英文版）

基　　金：This work was supported by the Natural Science Foundation of Jiangsu Province(Grant No.BK20190752);the National Natural Science Foundation of China(Grant No.51905275);the Natural Science Foundation of Colleges and Universities in Jiangsu Province(Grant No.19KJB460020);the Faculty Research Funding of Nanjing Forestry University(Grant No.163040111);the Open Foundation of Jiangsu Wind Power Generation Engineering and Technology Center(No.Zk19-03-12).

摘　　要：This study numerically analyzed the heat transfer characteristics outside the condenser of a rotating heat pipe grinding wheel(RHP-GW).The goal of this investigation is to determine the optimal structure and parameters for the condenser section of RHP-GW.Different fin height(f=0-7 mm),rotational Reynolds number(Rer=1602-6408)and jet Reynolds number(Rej=42379-108302)were analyzed under input heat flux of 4000 W/m2.A fully developed flow was imposed at the outlet of the nozzles.Results showed that the optimal heat transfer rate was obtained for fin height of 5 mm,which improved the average Nusselt number by 84%compared to the structure without fins.A critical Rej for each Rer that the impinging jet can reach the condenser section was found.The critical Rej value increases with Rer,which is in the range from 42379 to 61215 and 61215 to 80050 for Rer=6408 and Rer=9610,respectively.

关 键 词：rotating heat pipe grinding wheel impinging jet heat transfer numerical analysis 

分 类 号：V261[航空宇航科学与技术—航空宇航制造工程]