An Experimental Study of Jet Impingement on Concave Surface: Effects of Reynolds Number and Crossflow

摘要：

Multi-jet impingement produced by one row of impinging holes was applied to a closed one way channel with a blade leading edge liked surface on the top. The effects of jet Reynolds number and upstream crossflow on surface heat transfer characteristics are studied. Visualization of the temperature distributions upon the nose surface as well as the side wall is achieved using thermochromic liquid crystal (TLC). Test results show that the crossflow generated by upstream jets can exert significant impacts on behaviours of the downstream impinging flow. The uniformity of local Nusselt number distribution on rear surface of the channel can be seriously influenced by the crossflow. The experimental results have been compared with previous correlation for validation. Based on the present geometry a new correlation is given for industrial use.

关键词： impingement jet crossflow curved surface heat transfer thermochromic liquid crystal

作者: L. Guo Y.Y. Yan Z.C. Liu

作者单位: Energy & Sustainability Research Division, Faculty of Engineering, University of Nottingham, UK Energy & Sustainability Research Division, Faculty of Engineering, University of Nottingham, UK Key Department of Internal Combustion Engine, Jilin University, China

会议类型: 国际会议

会议名称: 4th International Symposium on Heat Transfer and Energy Conservation(第四届传热与节能国际研讨会 ISHTEC2012)

会议地点: 广州

会议语种:英文

页码: 1-5

在线出版日期: 2012-01-06（万方平台首次上网日期，不代表论文的发表时间）