Observation of Nucleate Boiling on a Fine Copper Wire with Superhydrophobic Micropatterns  

作　　者：WANG Xin-Wei SONG Yong-Xin WANG Hao 王新巍;宋永欣;王昊(Beijing Key Laboratory for Solid Waste Utilization and Management,College of Engineering University,Peking University,Beijing 100871;Department of Marine Engineering,Dalian Maritime University,Dalian 116026)

机构地区：[1]Beijing Key Laboratory for Solid Waste Utilization and Management,College of Engineering University,Peking University,Beijing 100871 [2]Department of Marine Engineering,Dalian Maritime University,Dalian 116026

出　　处：《Chinese Physics Letters》2012年第11期140-142,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 51276003;Common Development Fund of Beijing;the Dalian Science and Technology Foundation(2011J21DW005).

摘　　要：Hydrophobic islands/patterns on a hydrophilic substrate could be employed to enhance boiling heat transfer,however the underlying mechanisms are far from clear.We perform boiling experiments on a copper wire coated with superhydrophobic micropatterns(contact angle>170°).The copper wire is as fine as 150μm in diameter,greatly facilitating the observation of the bubble dynamic details.With the heat flux increasing,four regimes are characterized based on the bubble behavior.The superhydrophobic micropatterns are found to play critical roles in bubble formation and distribution as well as the interactions.

关 键 词：BUBBLE BOILING copper 

分 类 号：TG1[金属学及工艺—金属学]