Document Detail

Numerical insight into flow structure in ultraturbulent thermal convection.
MedLine Citation:
PMID:  12366253     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Very large eddy simulations of high-aspect-ratio unbounded Rayleigh-Bénard convection for Pr=0.71 over a 10-decade range of Rayleigh numbers (Ra=10(5)-10(15)) reveal a consolidation and dramatic thinning of the wall boundary layer with an increase in the Ra number. The fingerlike plumes between planform structures become also thinner, more distant, but much more vigorous. The Ra exponent in the Nu proportional to Ra(n) correlation follows n approximately 0.31 scaling, but n begins to increase gradually above Ra=10(13). However, no trend towards "crossing" of the thermal and hydrodynamic boundary layers is observed.
S Kenjeres; K Hanjalić
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Publication Detail:
Type:  Journal Article     Date:  2002-09-19
Journal Detail:
Title:  Physical review. E, Statistical, nonlinear, and soft matter physics     Volume:  66     ISSN:  1539-3755     ISO Abbreviation:  Phys Rev E Stat Nonlin Soft Matter Phys     Publication Date:  2002 Sep 
Date Detail:
Created Date:  2002-10-07     Completed Date:  2002-12-02     Revised Date:  2003-11-03    
Medline Journal Info:
Nlm Unique ID:  101136452     Medline TA:  Phys Rev E Stat Nonlin Soft Matter Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  036307     Citation Subset:  -    
Department of Applied Physics, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.
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