Search: WFRF:(Wettlaufer John S.) >
Tailoring boundary ...
Tailoring boundary geometry to optimize heat transport in turbulent convection
-
Toppaladoddi, Srikanth (author)
-
- Wettlaufer, John S. (author)
- KTH,Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Yale University, USA; University of Oxford, UK,Nordic Institute for Theoretical Physics NORDITA,Yale University, United States; University of Oxford, United Kingdom
-
- Wettlaufer, John S. (author)
- KTH,Nordic Institute for Theoretical Physics NORDITA,Yale University, United States; University of Oxford, United Kingdom
-
(creator_code:org_t)
- 2015-09-10
- 2015
- English.
-
In: Europhysics letters. - : IOP Publishing. - 0295-5075 .- 1286-4854. ; 111:4
- Related links:
-
http://arxiv.org/pdf...
-
show more...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
show less...
Abstract
Subject headings
Close
- By tailoring the geometry of the upper boundary in turbulent Rayleigh-Benard convection we manipulate the boundary layer-interior flow interaction, and examine the heat transport using the lattice Boltzmann method. For fixed amplitude and varying boundary wavelength., we find that the exponent beta in the Nusselt-Rayleigh scaling relation, Nu - 1 proportional to Ra-beta, is maximized at lambda =lambda(max) approximate to ( 2 pi)(-1), but decays to the planar value in both the large (lambda >> lambda(max)) and small (lambda << lambda(max)) wavelength limits. The changes in the exponent originate in the nature of the coupling between the boundary layer and the interior flow. We present a simple scaling argument embodying this coupling, which describes the maximal convective heat flux.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database