Nanosecond laser texturing of uniformly and non-uniformly wettable micro structured metal surfaces for enhanced boiling heat transfer

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• 作者：Matevž Zupančič ; ^{matevz.zupancic@fs.uni-lj.si} ; Matic Može ; Peter Gregorčič ; Iztok Golobič
• 关键词：Nanosecond laser ; Surface texturing ; Non-uniform wettability ; Microcavities ; Nucleation criteria ; Enhanced boiling heat transfer
• 刊名：Applied Surface Science
• 出版年：2017
• 出版时间：31 March 2017
• 年：2017
• 卷：399
• 期：Complete
• 页码：480-490
• 全文大小：6106 K
• 卷排序：399

文摘

Surfaces with periodically changed wettability were produced by a ns marking laser. Heat transfer was investigated on uniformly and non-uniformly wettable surfaces. Microporous surfaces with non-uniform wettability enhance boiling heat transfer. The most bubble nucleations were observed in the vicinity of the microcavities. Results agree with the predictions of the nucleation criteria.