Title: Steady regime of a turbulent plane jet flowing into a rectangular hot cavity

Authors: Farida Iachachene; Yacine Halouane; Amina Mataoui; Azemi Benaissa

Addresses: Theoretical and Applied Laboratory of Fluid Mechanics, University of Science and Technology of Algiers USTHB, Bab Ezzouar, Algeria ' Theoretical and Applied Laboratory of Fluid Mechanics, University of Science and Technology of Algiers USTHB, Bab Ezzouar, Algeria ' Theoretical and Applied Laboratory of Fluid Mechanics, University of Science and Technology of Algiers USTHB, Bab Ezzouar, Algeria ' Department of Mechanical and Aerospace Engineering, Royal Military College of Canada, P.O. Box 17000, Stn Forces, Kingston, Ontario, K7M 7G1, Canada

Abstract: Turbulent heat transfer between a confined jet and the walls of a hot rectangular cavity is studied numerically by finite volume method using the k-ω SST one point closure turbulence model. The parameters considered in this study were the jet exit Reynolds number, the temperature difference between the cavity heated wall and the jet exit and the jet location inside the cavity. The flow structure predictions were in good agreement with the available experimental data. The maximum local heat transfer between the cavity walls and the flow occurred at the potential core end. The ratio between the stagnation point Nusselt numbers of the cavity bottom to the maximum Nusselt number on the lateral cavity wall decreased with the Reynolds number for all considered impinging distances. For a given lateral confinement, the stagnation Nusselt number of the asymmetrical interaction is almost equal to that of the symmetrical interaction.

Keywords: jet-cavity interaction; plane jets; heat transfer; turbulence modelling; turbulent rectangular cavity; hot cavity; finite volume method; FVM; jet exit Reynolds number; temperature difference; jet location; cavity walls; jet impingement.

DOI: 10.1504/PCFD.2016.076232

Progress in Computational Fluid Dynamics, An International Journal, 2016 Vol.16 No.3, pp.179 - 189

Published online: 30 Apr 2016 *

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