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Heat Transfer Research
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ISSN Imprimir: 1064-2285
ISSN En Línea: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2019026143
pages 1781-1818

COMPUTATIONAL THERMAL ANALYSIS OF TURBULENT FORCED-CONVECTION FLOW IN AN AIR CHANNEL WITH A FLAT RECTANGULAR FIN AND DOWNSTREAM V-SHAPED BAFFLE

Younes Menni
Unite of Research on Materials and Renewable Energies - URMER - Department of Physics, Faculty of Sciences, Abou Bekr Belkaid University, BP 119-13000-Tlemcen, Algeria
Ahmed Azzi
Unit of Research on Materials and Renewable Energies – URMER, Abou Bekr Belkaid University, BP 119-13000-Tlemcen, Algeria; Department of Mechanical Engineering, Faculty of Technology, Abou Bekr Belkaid University, BP 230-13000-Tlemcen, Algeria
Ali J. Chamkha
Mechanical Engineering Department, Prince Sultan Endowment for Energy and Environment, Prince Mohammad Bin Fahd University, Al-Khobar 31952, Saudi Arabia; RAK Research and Innovation Center, American University of Ras Al Khaimah, P.O. Box 10021, Ras Al Khaimah, United Arab Emirates

SINOPSIS

Turbulent forced-convection fluid dynamic simulations were conducted to investigate the impacts of different baffle shapes on the thermal aerodynamic performance of a horizontal two-dimensional channel of rectangular section with wall-mounted baffles and fins. The top wall was put in a constant temperature condition, as the bottom wall was thermally insulated. Two obstacles, having different shapes, i.e., simple and 45° downstream V-shaped, were inserted into the channel and fixed to the upper and lower walls, in a periodically staggered manner. The fluid flow model was governed by the RANS equations and the energy equation. All these equations were discretized by the FVM, handled the pressure-velocity coupling with the SIMPLE discretization algorithm and solved using a CFD technique. This represents a very important issue in the area of shell-and-tube heat exchangers where the flow must be characterized; there is also a need to identify the velocity distribution, as well as the existence and the extension of possible recirculations.

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