2011 Fiscal Year Final Research Report
Phase Change Phenomena on Hot Surfaces with a Variety of Wettability from Superhydrophilic to Superhydrophobic
| Project/Area Number |
21246036
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Thermal engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
MASUDA Masataka 九州大学, 大学院・工学研究院, 教授 (40165725)
KOHNO Masamichi 九州大学, 大学院・工学研究院, 准教授 (50311634)
KUBOTA Hiromi 九州大学, 大学院・工学研究院, 助教 (10117103)
ARITA Makoto 九州大学, 大学院・工学研究院, 助教 (30284540)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 表面・界面物性 / 熱工学 / 接触角 / 酸化チタン / 液滴蒸発 / 超撥水 / 濡れ性 / 噴霧冷却 / 伝熱特性 |
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| Research Abstract |
The present study aims to make clear the effect of surface wettability and roughness on evaporation of water drop on hot surfaces. Water drop evaporation experiment has been performed using surface samples with a variety of roughness. The experimental setup we have developed can control the diameter, impacting velocity and frequency of impinged water drops independently. The results show that(a) liquid-solid contact time increases with the decrease in impacting velocity and with the increase in drop diameter, and(b) maximum spread of water droplet increases with surface roughness.
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Research Products
(5 results)
