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  • 标题:Stationary convection in dilute solutions of 3He in superfluid 4He
  • 本地全文:下载
  • 作者:P. A. Warkentin ; H. J. Haucke ; P. Lucas
  • 期刊名称:Proceedings of the National Academy of Sciences
  • 印刷版ISSN:0027-8424
  • 电子版ISSN:1091-6490
  • 出版年度:1980
  • 卷号:77
  • 期号:12
  • 页码:6983-6987
  • DOI:10.1073/pnas.77.12.6983
  • 语种:English
  • 出版社:The National Academy of Sciences of the United States of America
  • 摘要:Two symmetric, convecting steady states have been observed in a novel cell of unity aspect ratio and studied over a range of temperature for two concentrations of 3He in superfluid 4He. An existing theory due to Parshin has been related to the conditions necessary for convection in this system, defining a Rayleigh number closely analogous to that of a classical one-component Benard system. Values of this Rayleigh number at the onset of convection calculated from experimental data are found to have little temperature dependence, with an average value near that for a classical one-component fluid in this geometry. The Prandtl number is small and temperature dependent, with a smallest calculated value of 0.05.
  • 关键词:Bénard ; thermohydrodynamics
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