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5. Heat transfer on a ribbed U-bend surface relevant for the blade-tip cooling

Heat transfer on a ribbed U-bend surface relevant for the blade-tip cooling

来源 :2nd International Workshop on Heat Transfer Advances for Ene | 被引量 : 0次 | 上传用户：hahabiaoren

【摘 要】

：

Tip-wall heat transfer in a U-bend channel has been examined experimentally by using the liquid crystal technique.Periodic square ribs were fitted onto the tip surface to increase the turbulence level

【作 者】

：

Lei Wang Zahra Ghorbani-Tari Chenglong Wang Bengt Sundén 

【机 构】

：

Department of Energy Sciences, Lund University, Lund 22100, Sweden

【出 处】

：

2nd International Workshop on Heat Transfer Advances for Ene

【发表日期】

：

2013年1期

【关键词】

：

rib blade-tip cooling heat transfer enhancement liquid crystal thermography 

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　　Tip-wall heat transfer in a U-bend channel has been examined experimentally by using the liquid crystal technique.Periodic square ribs were fitted onto the tip surface to increase the turbulence level and enhance the heat transfer.The ribs block the channel by 6% of its hydraulic diameter.

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