About: Helium cryostat for experimental study of natural turbulent convection

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	ublished experiments on natural turbulent convection in cryogenic He-4 gas show contradictory results in the values of Rayleigh number (Ra) higher than 10(11). This paper describes a new helium cryostat with a cylindrical cell designed for the study of the dependence of the Nusselt number (Nu) on the Rayleigh number (up to Ra approximate to 10(15)) in order to help resolve the existing controversy among published experimental results. The main part of the cryostat is a cylindrical convection cell of 300 mm in diameter and up to 300 mm in height. The cell is designed for measurement of heat transfer by natural convection at pressures ranging from 100 Pa to 250 kPa and at temperatures between 4.2 and 12 K. Parasitic heat fluxes into the convection medium are minimized by using thin sidewalls of the bottom and top parts of the cell. The exchangeable central part of the cell enables one to modify the cell geometry. ublished experiments on natural turbulent convection in cryogenic He-4 gas show contradictory results in the values of Rayleigh number (Ra) higher than 10(11). This paper describes a new helium cryostat with a cylindrical cell designed for the study of the dependence of the Nusselt number (Nu) on the Rayleigh number (up to Ra approximate to 10(15)) in order to help resolve the existing controversy among published experimental results. The main part of the cryostat is a cylindrical convection cell of 300 mm in diameter and up to 300 mm in height. The cell is designed for measurement of heat transfer by natural convection at pressures ranging from 100 Pa to 250 kPa and at temperatures between 4.2 and 12 K. Parasitic heat fluxes into the convection medium are minimized by using thin sidewalls of the bottom and top parts of the cell. The exchangeable central part of the cell enables one to modify the cell geometry. (en)
Title	Helium cryostat for experimental study of natural turbulent convection Helium cryostat for experimental study of natural turbulent convection (en)
skos:prefLabel	Helium cryostat for experimental study of natural turbulent convection Helium cryostat for experimental study of natural turbulent convection (en)
skos:notation	RIV/68081731:_____/10:00350813!RIV11-MSM-68081731
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(ED0017/01/01), P(GA202/05/0218), P(KJB200650902), Z(AV0Z20650511)
http://linked.open...iv/cisloPeriodika	8
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Hanzelka, Pavel Srnka, Aleš Musilová, Věra Králík, Tomáš Urban, Pavel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav přístrojové techniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	261353
http://linked.open...ai/riv/idVysledku	RIV/68081731:_____/10:00350813
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Rayleigh-Benard convection; ultimate regime (en)
http://linked.open.../riv/klicoveSlovo	Rayleigh-Benard convection ultimate regime
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[5FC4FEF3C4BC]
http://linked.open...i/riv/nazevZdroje	Review of Scientific Instruments
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	APPLICATION LABORATORIES OF ADVANCED MICROTECHNOLOGIES AND NANOTECHNOLOGIES Elucidation of fundamental questions in turbulent convection Cryogenic helium classical and quantum turbulence
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	81
http://linked.open...iv/tvurceVysledku	Hanzelka, Pavel Králík, Tomáš Musilová, Věra Skrbek, L. Srnka, Aleš Urban, Pavel
http://linked.open...ain/vavai/riv/wos	000281906100030
http://linked.open...n/vavai/riv/zamer	Research into experimental methods for examination of the physical properties of matter and their application in advanced technologies
issn	0034-6748
number of pages	5 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Helium cryostat for experimental study of natural turbulent convection Helium cryostat for experimental study of natural turbulent convection Helium cryostat for experimental study of natural turbulent convection

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