Transition from boiling to free convection in supercritical fluid

Jun Tamba, Toshio Takahashi, Taku Ohara, Toshio Aihara

研究成果: Article査読

13 被引用数 (Scopus)

抄録

Observations of abnormal convection similar to boiling in supercritical fluids have been reported for many years. Recently, a molecular dynamics study performed by the authors clarified that even at the supercritical pressure, an interface accompanied with interfacial tension exists in fluids under a temperature gradient. Such findings have led us to think that the abnormal convection observed slightly above the critical point, which has been called the boiling-like phenomenon, is nothing but a boiling phenomenon. Here we report from this point of view, an experimental observation of the transition from boiling at subcritical pressure to ordinary free convection far above the critical pressure. Visual observation and measurement of the critical heat flux shows that with pressure elevation the phenomenon changes gradually and continuously from boiling to free convection with no drastic changes. The point at which boiling characteristics disappear lies slightly above the critical pressure.

本文言語English
ページ(範囲)248-255
ページ数8
ジャーナルExperimental Thermal and Fluid Science
17
3
DOI
出版ステータスPublished - 1998 7

ASJC Scopus subject areas

  • 化学工学(全般)
  • 原子力エネルギーおよび原子力工学
  • 航空宇宙工学
  • 機械工学
  • 流体および伝熱

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