About: Anomalous heat transport and condensation in convection of cryogenic helium

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1073/pnas.1303996110
Description	When a hot body A is thermally connected to a cold body B, the textbook knowledge is that heat flows from A to B. Here, we describe the opposite case in which heat flows from a colder but constantly heated body B to a hotter but constantly cooled body A through a two-phase liquid-vapor system. Specifically, we provide experimental evidence that heat flows through liquid and vapor phases of cryogenic helium from the constantly heated, but cooler, bottom plate of a Rayleigh-Benard convection cell to its hotter, but constantly cooled, top plate. The bottom plate is heated uniformly, and the top plate is cooled by heat exchange with liquid helium maintained at 4.2 K. Additionally, for certain experimental conditions, a rain of helium droplets is detected by small sensors placed in the cell at about one-half of its height. When a hot body A is thermally connected to a cold body B, the textbook knowledge is that heat flows from A to B. Here, we describe the opposite case in which heat flows from a colder but constantly heated body B to a hotter but constantly cooled body A through a two-phase liquid-vapor system. Specifically, we provide experimental evidence that heat flows through liquid and vapor phases of cryogenic helium from the constantly heated, but cooler, bottom plate of a Rayleigh-Benard convection cell to its hotter, but constantly cooled, top plate. The bottom plate is heated uniformly, and the top plate is cooled by heat exchange with liquid helium maintained at 4.2 K. Additionally, for certain experimental conditions, a rain of helium droplets is detected by small sensors placed in the cell at about one-half of its height. (en)
Title	Anomalous heat transport and condensation in convection of cryogenic helium Anomalous heat transport and condensation in convection of cryogenic helium (en)
skos:prefLabel	Anomalous heat transport and condensation in convection of cryogenic helium Anomalous heat transport and condensation in convection of cryogenic helium (en)
skos:notation	RIV/00216208:11320/13:10173323!RIV14-MSM-11320___
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GPP203/12/P897)
http://linked.open...iv/cisloPeriodika	20
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Skrbek, Ladislav Schmoranzer, David
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	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	61312
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/13:10173323
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	rain formation; condensation; temperature inversion; two-phase convection (en)
http://linked.open.../riv/klicoveSlovo	rain formation temperature inversion two-phase convection condensation
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[125C2BD0F7B8]
http://linked.open...i/riv/nazevZdroje	Proceedings of the National Academy of Sciences of the United States of America
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Cryogenic Rayleigh-Bénard convection at Rayleigh numbers above 1e11
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	110
http://linked.open...iv/tvurceVysledku	Hanzelka, Pavel Schmoranzer, David Skrbek, Ladislav Urban, Pavel Sreenivasan, Katepalli R.
http://linked.open...ain/vavai/riv/wos	000319803500023
issn	0027-8424
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.1073/pnas.1303996110
http://localhost/t...ganizacniJednotka	11320

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