ISSN Online: 2377-424X
ISBN Print: 978-1-56700-421-2
International Heat Transfer Conference 15
Effect of the Fin Height on Unsteady Flows and Heat Transfer in a Differentially Heated Cavity
Résumé
Unsteady natural convection flows in a differentially heated cavity with a conducting and an adiabatic fin are
numerically investigated. The results show that the flow structures and temperature time series in the transition
to a periodic flow induced by the fin vary with the fin height. Based on the current numerical results, the
temporal development and spatial structures of the flows induced by the fin at different heights are described,
and instabilities are characterized. It is found that the fin may improve the convective flows in the cavity and in
turn enhance the heat transfer through the cavity in comparison with the case without a fin. The heat transfer
through the cavity is dependent on the fin height.
MOTS CLÉS:
Thermodynamics, convection, enhancement, fin, unsteady flows, differentially heated cavity