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Article
Author(s)
Djedid Taloub1, 2 and Abdelhadi Beghidja1, 3
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DOI:10.17265/2161-6221/2013.08.007
Affiliation(s)
1. Laboratory of Renewable Energy and Sustainable Development (LRESD) Constantine1 University, Constantine 25000, Algeria 2. Faculty of Science M’sila University, M’sila 28000, Algeria 3. Mechanical Department of Engineering, Constantine1 University, Constantine 25000, Algeria
ABSTRACT
Large Eddy Simulations of the anisothermal turbulent flows has been used in the context of interaction problems thermal fluid, structure. In this context, the aim of this work lies not only in identifying the various elements that may underestimate the temperature fluctuations at the interface fluid-solid but also the introduction of the models capable of reproducing the physical setting Thurs. At first, the choice of convection scheme <optimizing> the scalar transport has led to the adoption of an upwind scheme of theorem 2 order. The use of models with conventional walls showed weaknesses in the estimation of temperature fluctuations bet stalls in the case of boundary layers attached. This work presents a numerical validation of LES-WALE model using the results of the K-epsilon model, this study is based on 3D numerical simulation using FLUENT code calculates to determine the longitudinal velocity, the thermal fields for the configuration the and speed vectors (U, V, W) for configuration in the plane of the recirculation zones for the case of different values of flow Rayleigh. Therefore, the results have good agreement with those of k-epsilon model, as they show the difference between the cases of flows.
KEYWORDS
Cavity, LES, turbulent, fluent, K-epsilon.
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