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Computational Thermal Sciences: An International Journal

Publicou 6 edições por ano

ISSN Imprimir: 1940-2503

ISSN On-line: 1940-2554

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NUMERICAL STUDY OF A TRANSITIONAL NATURAL VENTILATION FLOW DRIVEN BY A LINE SOURCE PLUME WITH VARIED REYNOLDS AND PRANDTL NUMBERS

Volume 3, Edição 6, 2011, pp. 511-519
DOI: 10.1615/ComputThermalScien.2011003212
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RESUMO

The effects of the parameters, Reynolds number, Re, and Prandtl number, Pr, on natural ventilation flow in the transitional regime, with a line heat flux source, are investigated using two-dimensional direct numerical simulations. Results have been obtained for Re and Pr in the ranges, 5.0 × 105 ≤ Re ≤ 1.58 × 106 and 0.7 ≤ Pr ≤ 70. Flows with constant heat flux,q ∼ Re2/Pr, at Re2/Pr = 3.57 × 1010 and 3.57 × 1011 are studied in detail. The results obtained in this study provide a good illustration of the effect of Re and Pr on flow turbulence and the fully-developed flow characteristics. In particular, the Pr dependent variation in the turbulence intensity in the upper buoyant layer, and in the plume volume flux, have been shown to increase with reducing Re2/Pr.

CITADO POR
  1. Hattori Tae, Armfield Steven W., Kirkpatrick Michael P., Transitional ventilated filling box flow with a line heat source, International Journal of Heat and Mass Transfer, 55, 13-14, 2012. Crossref

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