Numerical analysis of heat transfer by natural convection and radiation in participating fluids enclosed in square cavities

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Numerical Heat Transfer. Part A, Applications; (United States)

DOI:https://doi.org/10.1080/10407789108944820· OSTI ID:5725560

Draoui, A; Allard, F; Beghein, C ^[1]

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1. Centre de Thermique, URA CNRS 1372, Lab. Equipment de l'Habitat, Bat 307, Inst. National des Sciences Appliquees, 69621 Villeurbanne Cedex (FR)

In this paper the influence of thermal radiation on natural convection in a participating fluid contained in a square cavity is studied numerically. The radiative transfer process is solved from the P1 approximation. The Navier-Stokes equations are solved by a finite difference scheme integrated over control volumes. A numerical study of the so-called window problem (thermally driven cavity) shows the influence of thermal radiation on this reference problem for Rayleigh numbers in the range of 10{sup 3}--10{sup 7} and Planck numbers varying from 1 to 0.05. The isotherms, streamlines, and heat lines show an increase of the dynamical effects in the central part of the cavity and a significant modification of the boundary layers. Results obtained from the simulation of an isotropically scattering medium are given.

• OSTI ID: 5725560
• Journal Information: Numerical Heat Transfer. Part A, Applications; (United States), Journal Name: Numerical Heat Transfer. Part A, Applications; (United States) Vol. 20:2; ISSN 1040-7782; ISSN NHAAE
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
CAVITIES
CONFIGURATION
CONVECTION
COOLING
DIFFERENTIAL EQUATIONS
ENERGY TRANSFER
EQUATIONS
FINITE DIFFERENCE METHOD
FLUIDS
HEAT TRANSFER
ITERATIVE METHODS
LIGHT SCATTERING
MASS TRANSFER
NATURAL CONVECTION
NAVIER-STOKES EQUATIONS
NUMERICAL SOLUTION
PARTIAL DIFFERENTIAL EQUATIONS
PLANCK LAW
RADIATIVE COOLING
RECTANGULAR CONFIGURATION
SCATTERING
SQUARE CONFIGURATION