Abstract
The variations of root-mean-square (r.m.s.) temperature and velocity in turbulent thermal convection above a heated, horizontal surface are analyzed by extending the arguments of Castaing et al. ([1]: J. Fluid Mech. 204, 1-30 (1989)) which lead to the two-sevenths power law for heat transfer. Asymptotic matching of properties scaled on Deardoff's convection scales with those scaled on Castaing et al.'s lambda-layer show that the r.m.s. temperature decays as z-1/2 and the r.m.s. vertical velocity increases as log z. These results are supported by data from Rayleigh convection and unsteady convection, both penetrative and non-penetrative.
Original language | English (US) |
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Pages (from-to) | 2303-2310 |
Number of pages | 8 |
Journal | International Journal of Heat and Mass Transfer |
Volume | 39 |
Issue number | 11 |
DOIs | |
State | Published - Jul 1996 |
Externally published | Yes |
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanical Engineering
- Fluid Flow and Transfer Processes