| Prandtl-number dependence of heat transport in turbulent Rayleigh-Bénard convection. | |
| | |
MedLine Citation:
|
PMID: 11327960 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
|
We present measurements of the Nusselt number N as a function of the Rayleigh number R and the Prandtl number sigma in cylindrical cells with aspect ratios gamma = 0.5 and 1.0. We used acetone, methanol, ethanol, and 2-propanol with Prandtl numbers sigma = 4.0, 6.5, 14.2, and 34.1, respectively, in the range 3x10(7) less, similarR less, similar10(11). At constant R, N(R,sigma) varies with sigma by only about 2%. This result disagrees with the extrapolation of the Grossmann and Lohse theory beyond its range of validity, which implies a decrease by 20% over our sigma range, but agrees with their recent extension of the theory to small Reynolds numbers. |
| | |
Authors:
|
G Ahlers; X Xu |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Physical review letters Volume: 86 ISSN: 0031-9007 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2001 Apr |
Date Detail:
|
Created Date: 2001-04-30 Completed Date: 2001-06-28 Revised Date: 2003-10-31 |
Medline Journal Info:
|
Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
|
Languages: eng Pagination: 3320-3 Citation Subset: - |
Affiliation:
|
Department of Physics, University of California, Santa Barbara, CA 93106, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Thermal convection for large Prandtl numbers.
Next Document: New mechanism of x-ray radiation from a relativistic charged particle in a dielectric random medium.