Surface wettability effects in heat and fluid flow

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

3 被引用数 (Scopus)

抄録

Effects of surface wettability on liquid-vapor phase change phenomena and single- and two-phase flow in tube have been studied in wide range of contact angles using superhydrophilic (SH) and super-water-repellent (SWR) surfaces. Heat transfer in falling film evaporation on a TiO2-coated SH surface is tremendously enhanced due to very thin stable film. In pool boiling, critical heat flux (CHF) and minimum heat flux (MHF) increase with the decrease in contact angle. Wetting limit temperature of water drop on heated surface increases with the decrease in contact angle. In pool boiling on SWR surface, bubble nucleation and film boiling occur in extremely small superheating. Drag reduction was observed in water flow in tube with SWR coating in laminar flow region, and on the other hand, in two-phase flow pressure drop for the SH wall is smaller than that for the SWR wall.

本文言語英語
ホスト出版物のタイトルProceedings of the 4th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM2006
ページ1333-1341
ページ数9
2006 B
出版ステータス出版済み - 2006
イベント4th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM2006 - Limerick, アイルランド
継続期間: 6 19 20066 21 2006

その他

その他4th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM2006
国/地域アイルランド
CityLimerick
Period6/19/066/21/06

All Science Journal Classification (ASJC) codes

  • 工学(全般)

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