Source:http://linkedlifedata.com/resource/pubmed/id/20867768
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
3
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| pubmed:dateCreated |
2010-9-27
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| pubmed:abstractText |
We analyze the reversals of the large-scale flow in Rayleigh-Bénard convection both through particle image velocimetry flow visualization and direct numerical simulations of the underlying Boussinesq equations in a (quasi-) two-dimensional, rectangular geometry of aspect ratio 1. For medium Prandtl number there is a diagonal large-scale convection roll and two smaller secondary rolls in the two remaining corners diagonally opposing each other. These corner-flow rolls play a crucial role for the large-scale wind reversal: They grow in kinetic energy and thus also in size thanks to plume detachments from the boundary layers up to the time that they take over the main, large-scale diagonal flow, thus leading to reversal. The Rayleigh vs Prandtl number space is mapped out. The occurrence of reversals sensitively depends on these parameters.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Jul
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| pubmed:issn |
1079-7114
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| pubmed:author | |
| pubmed:issnType |
Electronic
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| pubmed:day |
16
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| pubmed:volume |
105
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
034503
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| pubmed:year |
2010
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| pubmed:articleTitle |
Flow reversals in thermally driven turbulence.
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| pubmed:affiliation |
Physics of Fluids Group, Faculty of Science and Technology, Impact and MESAþ Institutes & Burgers Center for Fluid Dynamics,University of Twente, 7500AE Enschede, The Netherlands.
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| pubmed:publicationType |
Journal Article
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