Heat transfer of single drop impact on a film flow cooling a hot surface

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• 作者：Xuan Gao^a ; Lingjian Kong^a ; ^b ; Ri Li^a ; ^{sunny.li@ubc.ca} ; Jitian Han^b
• 关键词：Drop impact ; Film flow ; Spray cooling ; Heat transfer enhancement
• 刊名：International Journal of Heat and Mass Transfer
• 出版年：2017
• 出版时间：May 2017
• 年：2017
• 卷：108
• 期：part_PA
• 页码：1068-1077
• 全文大小：2725 K
• 卷排序：108

文摘

We study transient convection cooling during drop impact on cooling film flow. Heat transfer coefficient shows three steps change during drop impact. Enhancement of convection is studied for varied drop and film flow conditions. Local maximum enhancement may decrease with increasing drop velocity. Peak enhancement is correlated to the ratio of drop impact to film flow.