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.
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)
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).
