Variation of temperature and velocity fluctuations in turbulent thermal convection over horizontal surfaces

Ronald J. Adrian

doi:10.1016/0017-9310(95)00317-7

Variation of temperature and velocity fluctuations in turbulent thermal convection over horizontal surfaces

Ronald J. Adrian

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

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)
Pages (from-to)	2303-2310
Number of pages	8
Journal	International Journal of Heat and Mass Transfer
Volume	39
Issue number	11
DOIs	https://doi.org/10.1016/0017-9310(95)00317-7
State	Published - Jul 1996
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1016/0017-9310(95)00317-7

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title = "Variation of temperature and velocity fluctuations in turbulent thermal convection over horizontal surfaces",

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.",

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AU - Adrian, Ronald J.

PY - 1996/7

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N2 - 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.

AB - 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.

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DO - 10.1016/0017-9310(95)00317-7

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JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

IS - 11

ER -

Variation of temperature and velocity fluctuations in turbulent thermal convection over horizontal surfaces

Abstract

ASJC Scopus subject areas

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