Dynamics of boiling succeeding spontaneous nucleation on a rapidly heated small surface

Kunito Okuyama, Shoji Mori, Kimihiro Sawa, Yoshihiro Iida

研究成果: ジャーナルへの寄稿記事

30 引用 (Scopus)

抄録

The dynamics of boiling succeeding spontaneous nucleation on a small film heater immersed in ethyl alcohol are investigated at heating rates ranging from 107 K/s to approximately 109 K/s, under which spontaneous nucleation is dominant for the inception of boiling. Immediately after the concurrent generation of a large number of fine bubbles, a vapor film that covers the entire surface is formed by coalescence and rapidly expands to a single bubble. As the heating rate is increased, the coalesced bubble flattens and only a thin vapor film grows before cavitation collapse. Similar behaviors are also observed for water. Based on the observed results, a theoretical model of the dynamic bubble growth due to the self-evaporation of the superheated liquid layer, which develops before boiling incipience, is presented. The calculated results are compared with the observed results.

元の言語英語
ページ(範囲)2771-2780
ページ数10
ジャーナルInternational Journal of Heat and Mass Transfer
49
発行部数15-16
DOI
出版物ステータス出版済み - 7 1 2006
外部発表Yes

Fingerprint

boiling
Boiling liquids
Nucleation
bubbles
nucleation
Heating rate
Vapors
vapors
Coalescence
Cavitation
heating
Evaporation
Ethanol
cavitation flow
heaters
coalescing
ethyl alcohol
Water
evaporation
Liquids

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

これを引用

Dynamics of boiling succeeding spontaneous nucleation on a rapidly heated small surface. / Okuyama, Kunito; Mori, Shoji; Sawa, Kimihiro; Iida, Yoshihiro.

:: International Journal of Heat and Mass Transfer, 巻 49, 番号 15-16, 01.07.2006, p. 2771-2780.

研究成果: ジャーナルへの寄稿記事

Okuyama, Kunito ; Mori, Shoji ; Sawa, Kimihiro ; Iida, Yoshihiro. / Dynamics of boiling succeeding spontaneous nucleation on a rapidly heated small surface. :: International Journal of Heat and Mass Transfer. 2006 ; 巻 49, 番号 15-16. pp. 2771-2780.
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