The interaction effects of surface radiation with turbulent natural convection of a transparent medium in rectangular enclosures have been numerically analyzed, covering a wide range of Rayleigh number from to and aspect ratio from 1 to 200. The vertical walls of the enclosure are isothermal and maintained at different temperatures. The adiabatic top and bottom walls of the enclosure have been modelled for the limiting cases of negligible or perfect conduction along their lengths. The interaction with surface radiation results in larger velocity magnitudes and turbulence levels in the vertical as well as horizontal boundary layers, leading to an increase in the convective heat transfer by ∼25 percent. Due to the asymmetrical coupling of radiation, the augmentation of convective Nusselt number of the cold wall is larger than that of the hot wall. In tall enclosures, the convective Nusselt number exhibits three distinct regimes with respect to aspect ratio, viz. the slow growth regime, the accelerated growth regime and the invariant (or saturated) regime. The augmentation of convective Nusselt number for perfectly conducting horizontal walls is found to be of similar nature to that in the case with radiation interaction.
Skip Nav Destination
Article navigation
Technical Papers
Interaction Effects Between Surface Radiation and Turbulent Natural Convection in Square and Rectangular Enclosures
K. Velusamy, Scientific Officer,,
K. Velusamy, Scientific Officer,
Thermal Hydraulics Section, Indira Gandhi Centre for Atomic Research, Kalpakkam-603 102, India
Search for other works by this author on:
T. Sundararajan, Professor,,
T. Sundararajan, Professor,
Department of Mechanical Engineering, Indian Institute of Technology, Madras-600 036, India
Search for other works by this author on:
K. N. Seetharamu, Professor,
K. N. Seetharamu, Professor,
School of Mechanical Engineering, Universiti Sains Malaysia, (KCP) 31750 Tronoh, Malaysia
Search for other works by this author on:
K. Velusamy, Scientific Officer,
Thermal Hydraulics Section, Indira Gandhi Centre for Atomic Research, Kalpakkam-603 102, India
T. Sundararajan, Professor,
Department of Mechanical Engineering, Indian Institute of Technology, Madras-600 036, India
K. N. Seetharamu, Professor,
School of Mechanical Engineering, Universiti Sains Malaysia, (KCP) 31750 Tronoh, Malaysia
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division May 10, 2000; revision received April 10, 2001. Associate Editor: R. D. Skocypec.
J. Heat Transfer. Dec 2001, 123(6): 1062-1070 (9 pages)
Published Online: April 10, 2001
Article history
Received:
May 10, 2000
Revised:
April 10, 2001
Citation
Velusamy, K., Sundararajan, T., and Seetharamu, K. N. (April 10, 2001). "Interaction Effects Between Surface Radiation and Turbulent Natural Convection in Square and Rectangular Enclosures ." ASME. J. Heat Transfer. December 2001; 123(6): 1062–1070. https://doi.org/10.1115/1.1409259
Download citation file:
Get Email Alerts
Cited By
Entropic Analysis of the Maximum Output Power of Thermoradiative Cells
J. Heat Mass Transfer
Molecular Dynamics Simulations in Nanoscale Heat Transfer: A Mini Review
J. Heat Mass Transfer
Related Articles
A Numerical Simulation of Combined Radiation and Natural Convection in a Differential Heated Cubic Cavity
J. Heat Transfer (February,2010)
Natural
Convection Measurements for a Concentric Spherical
Enclosure
J. Heat Transfer (June,2006)
Scale Analysis of Combined Thermal Radiation and Convection Heat Transfer
J. Heat Transfer (April,2004)
Effect of Surface Radiation on Multiple Natural Convection Solutions in a Square Cavity Partially Heated from Below
J. Heat Transfer (October,2006)
Related Proceedings Papers
Related Chapters
Radiation
Thermal Management of Microelectronic Equipment
Radiation
Thermal Management of Microelectronic Equipment, Second Edition
Extended Surfaces
Thermal Management of Microelectronic Equipment