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Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 27, 1995 - Issue 1
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Original Articles

NATURAL CONVECTION BETWEEN TWO COMPARTMENTS OF A STAIRWELL-NUMERICAL PREDICTION AND COMPARISON WITH EXPERIMENT

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Pages 1-17 | Received 31 Jan 1994, Accepted 05 Apr 1994, Published online: 27 Feb 2007
 

Abstract

This work describes the results of a numerical study of buoyancy-driven flow in a stairwell model. Direct comparisons with the experimental data have been presented. The model is based on the conservation equations of mass, momentum, and energy and the transport equations of turbulence energy and its rate of dissipation. Two different wall thermal boundary conditions, namely, temperature and heat flux, are used and the results are compared. In the case of the heat flux boundary condition, only the convective component of the heat flux at each wall has been used, by first calculating the radiative component and then separating it from the total heat flux. The numerical model predicts the overall features of the flow satisfactorily, and the details of the velocity and temperature field with reasonable accuracy.

Additional information

Notes on contributors

S. Ergin-Özkan

Present address of S. Ergin-Özkan is Faculty of Naval Architecture and Ocean Engineering, Istanbul Technical University, Maslak 80626, Istanbul, Turkey.

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