Numerical study of Rayleigh-Béenard convection in a supercritical fluid

Biao Shen, Peng Zhang

研究成果: Contribution to journalArticle査読

抄録

Dramatic changes are expected of thermophysical properties near the liquid-gas critical point, which gives rise to the piston effect that accelerates thermal equilibration. On a long timescale, the gravity-induced Rayleigh-Béenard convection, influenced by the piston effect, exhibits features different from normal fluids. By the use of the SIMPLE algorithm, we study the evolution of convection in supercritical nitrogen at different proximities to the critical point. The results show that fluid motion is dominated by turbulent thermal plumes extremely close to the critical point. As the distance to the critical point grows, the formation of the flow pattern resembles that of a weakly compressible fluid.

本文言語英語
ページ(範囲)661-664
ページ数4
ジャーナルKung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
33
4
出版ステータス出版済み - 4 1 2012
外部発表はい

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学
  • 機械工学

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