論文

査読有り
2011年3月

Spontaneous flow reversals in Rayleigh-Benard convection of a liquid metal

PHYSICAL REVIEW E
  • Takatoshi Yanagisawa
  • ,
  • Yasuko Yamagishi
  • ,
  • Yozo Hamano
  • ,
  • Yuji Tasaka
  • ,
  • Yasushi Takeda

83
3
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevE.83.036307
出版者・発行元
AMER PHYSICAL SOC

We report a finding of spontaneous flow reversals of roll-like patterns in liquid gallium Rayleigh-Benard convection. The vessel has a square geometry with an aspect ratio of 5, and a horizontal magnetic field is applied to align the rolls. The flow patterns were visualized by ultrasonic velocity measurements, and the processes of the reversal were clearly observed. The basic flow pattern observed in the vessel is a four-roll structure with its axis parallel to the magnetic field. Emergence of a new circulation at a corner of the vessel causes flow reversal with reorganization of the whole pattern. The flow keeps relatively steady four-roll structure for most of the duration, while the reversal of it is over in a short time. The reversals of the flow occur randomly with the interval time between reversals being much longer than the circulation time.

Web of Science ® 被引用回数 : 20

リンク情報
DOI
https://doi.org/10.1103/PhysRevE.83.036307
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000288698600002&DestApp=WOS_CPL

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