Original title: Cryogenic He experiment on Natural Turbulent Convection
Authors: Králík, Tomáš ; Urban, Pavel ; Musilová, Věra ; Hanzelka, Pavel ; Srnka, Aleš ; Repisky, Andrej
Document type: Papers
Conference/Event: Cryogenics 2012. The IIR International Conference /12./, Dresden (DE), 2012-10-11 / 2012-10-14
Year: 2012
Language: eng
Abstract: Cryogenic helium gas is a suitable fluid for study of natural turbulent convection at very high Rayleigh numbers. We present experimental method and new result on Reynolds and Péclet numbers characterizing large scale circulation (LSC) of fluid at Rayleigh numbers within the range from 1011 to 1015. Observation of LSC is based on measurement of local temperature fluctuations of convecting helium. For experiments we used a specially designed cylindrical cell of height L = 0.3 m and diameter D = 0.3 m with minimized parasitic effects on studied convection, previously published on CryoPrague 2006 [1].
Keywords: Cryogenic He experiment; narural turbulent convection
Project no.: ED0017/01/01, GPP203/12/P897 (CEP)
Funding provider: GA MŠk, GA ČR
Host item entry: Cryogenics 2012. The 12th IIR International Conference Proceedings, ISBN 978-2-913149-93-9

Institution: Institute of Scientific Instruments AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0215522

Permalink: http://www.nusl.cz/ntk/nusl-135540


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