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Second Thermal and Fluids Engineering  Conference

ISSN: 2379-1748
ISBN: 978-1-56700-430-4

TURBULENT FORCED CONVECTION IN A CHANNEL WITH POROUS BAFFLES SIMULATED WITH LINEAR AND NON-LINEAR MODELS

Marcelo Assato
Instituto de Aeronáutica e Espaço - IAE, Departamento de Ciência e Tecnologia Aeroespacial - DCTA, São José dos Campos – SP, 1228-904, Brazil

Marcelo J. S. De Lemos
Departamento de Energia, IEME Instituto Tecnologico de Aeronautics, ITA-CTA Sao Jose dos Campos, Sao Paulo, CEP 12228-900, Brasil

Abstract

This paper deals with simulation of turbulent forced convection heat transfer in a channel containing solid and porous baffles. Governing equations are written in their conservative form. Turbulence is simulated using four distinct models, namely linear high Reynolds, linear low Reynolds, non-linear high Reynolds and non-linear low Reynolds. Transport equations of motion and mass continuity are discretized by means of the control volume method. The system of algebraic equations is relaxed via the strong implicit procedure. Results for the recirculating flows past the baffles are shown to be a strong function of the models used as well as the characteristics of the porous material, namely the porosity, and permeability of the porous plates.

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