Natural convection in a volumetrically heated fluid layer at high rayleigh numbers

F. B. Cheung

doi:10.1016/0017-9310(77)90096-5

Natural convection in a volumetrically heated fluid layer at high rayleigh numbers

F. B. Cheung

Mechanical Engineering

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

38 Scopus citations

Abstract

A phenomenological model of eddy heat transport in natural convection with volumetric energy sources at high Rayleigh numbers is developed in this study. The model is applied to the problem of thermal convection in a horizontal heated fluid layer with an adiabatic lower boundary and an isothermal upper wall. A correlation for mean Nusselt numbers is obtained for steady heat transfer. Distributions of the mean turbulent temperature, the eddy heat flux, and production of thermal variance in the heated fluid are presented. The mechanism of turbulent thermal convection at high Rayleigh numbers is discussed. Comparison is made with existing experiments and found to be good.

Original language	English (US)
Pages (from-to)	499-506
Number of pages	8
Journal	International Journal of Heat and Mass Transfer
Volume	20
Issue number	5
DOIs	https://doi.org/10.1016/0017-9310(77)90096-5
State	Published - May 1977

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1016/0017-9310(77)90096-5

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abstract = "A phenomenological model of eddy heat transport in natural convection with volumetric energy sources at high Rayleigh numbers is developed in this study. The model is applied to the problem of thermal convection in a horizontal heated fluid layer with an adiabatic lower boundary and an isothermal upper wall. A correlation for mean Nusselt numbers is obtained for steady heat transfer. Distributions of the mean turbulent temperature, the eddy heat flux, and production of thermal variance in the heated fluid are presented. The mechanism of turbulent thermal convection at high Rayleigh numbers is discussed. Comparison is made with existing experiments and found to be good.",

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N2 - A phenomenological model of eddy heat transport in natural convection with volumetric energy sources at high Rayleigh numbers is developed in this study. The model is applied to the problem of thermal convection in a horizontal heated fluid layer with an adiabatic lower boundary and an isothermal upper wall. A correlation for mean Nusselt numbers is obtained for steady heat transfer. Distributions of the mean turbulent temperature, the eddy heat flux, and production of thermal variance in the heated fluid are presented. The mechanism of turbulent thermal convection at high Rayleigh numbers is discussed. Comparison is made with existing experiments and found to be good.

AB - A phenomenological model of eddy heat transport in natural convection with volumetric energy sources at high Rayleigh numbers is developed in this study. The model is applied to the problem of thermal convection in a horizontal heated fluid layer with an adiabatic lower boundary and an isothermal upper wall. A correlation for mean Nusselt numbers is obtained for steady heat transfer. Distributions of the mean turbulent temperature, the eddy heat flux, and production of thermal variance in the heated fluid are presented. The mechanism of turbulent thermal convection at high Rayleigh numbers is discussed. Comparison is made with existing experiments and found to be good.

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JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

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ER -

Natural convection in a volumetrically heated fluid layer at high rayleigh numbers

Abstract

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