旋转热管砂轮冷凝端单翅片对流换热仿真研究  

Simulation Study on Convective Heat Transfer of Single Fin at Condensing End of Rotating Heat Pipe Grinding Wheel

作　　者：何永节 杜宝瑞 姚俊 袁达忠[2,3] He Yongjie;Du Baorui;Yoo Jun

机构地区：[1]沈阳航空航天大学机电工程学院,沈阳110136 [2]中国科学院工程热物理研究所,北京100190 [3]中国科学院大学,北京100049

出　　处：《机械制造》2024年第5期15-19,共5页Machinery

基　　金：国家重点研发计划课题(编号:2022YFB3707001)。

摘　　要：为优化旋转热管砂轮冷凝端结构,在冷凝端添加翅片,增大散热面积,实现有效散热,从而提高换热能力。应用FLUENT软件对旋转热管砂轮冷凝端单翅片进行对流换热仿真研究,通过建模分析翅片高度、翅片厚度、冷风条件、转速对冷凝端换热性能的影响。研究表明,当翅片高度为6 mm,翅片厚度为1 mm时,冷凝端外壁面的平均对流换热系数最大,平均温度最低。当冷风压力为0.6MPa时,冷凝端换热性能较好。随着旋转速度的加快,冷凝端外壁面平均对流换热系数增大,表明换热能力不断提高。仿真研究结果为旋转热管砂轮冷凝端结构优化及后续磨削试验提供了参考,具有较高的实际工程应用价值。In order to optimize the condensing end structure of the rotating heat pipe grinding wheel,fin was added to the condensing end to increase the heat dissipation area and achieve effective heat dissipation,thereby improving the heat exchange capacity.The convective heat transfer simulation of the single fin at the condensing end of the rotating heat pipe grinding wheel was carried out by using FLUENT software,and the effects of fin height,fin thickness,cold air condition and rotation speed on the heat transfer performance of the condensing end were analyzed through modeling.The result shows that when the fin height is 6 mm and the fin thickness is 1 mm,the average convective heat transfer coefficient of the outer wall of the condensing end is the highest,and the average temperature is the lowest.When the cold air pressure is 0.6 MPa,the heat exchange performance of the condensing end is better.With the acceleration of rotation speed,the average convective heat transfer coefficient of the outer wall of the condensing end increases,indicating that the heat transfer capacity continues to increase.The simulation result provides a reference for the optimization of the condensing end structure of the rotating heat pipe grinding wheel and the subsequent grinding test,which has high practical engineering application value.

关 键 词：旋转热管 砂轮 翅片 对流换热 研究 

分 类 号：TK172.4[动力工程及工程热物理—热能工程]