摘要
首次将涡发生器用于自然对流的强化传热.在片式散热器空气侧和油侧分别布置矩形翼纵向涡发生器,采用数值模拟的方法研究其散热性能.分析了矩形翼的长度、攻角和布置数量等参数对散热性能的影响.结果表明,片式散热器空气侧布置矩形翼时,强化传热效果明显,而油侧布置时强化传热效果不明显.当片式散热器空气侧布置矩形翼时,在研究范围内,传热系数增加23.6%-32.0%,矩形翼的最佳参数为长度为2 mm,攻角为15°,在高度方向上的数量为16.
The rectangular winglets are used for the first time to enhance the natural convection heat transfer in the present work.The natural convection heat transfer performance of a panel type radiator attached with rectangular winglets on airside or oil-side was numerically investigated.The effects of the chord of rectangular winglet,the number of winglets along the streamwise direction and attack angle of the winglet on the heat dissipation performance are examined.The computational results show that the heat transfer enhancement of the radiator with the rectangular winglets on the oil-side is substantially lower.While the application of rectangular winglet on the air-side can obviously enhance the heat dissipation of panel type radiator.In the computational range of present work,the overall heat transfer coefficient is increased by 23.6% - 32.0% and the optimal condition is l = 2 mm,= 15 ° and N=16 when the rectangular winglet is attached on the air-side of the radiator.
出处
《河北工业大学学报》
CAS
北大核心
2012年第5期32-37,共6页
Journal of Hebei University of Technology
基金
国家自然科学基金(51106041)
天津市应用基础及前沿技术研究计划基金(09JCYBJC07300)
关键词
变压器
强化传热
纵向涡发生器
数值模拟
自然对流
transformer
heat transfer enhancement
longitudinal vortex generator
numerical simulation
natural convection
