Convection Heat Transfer Analysis in a Channel with an Open Trapezoidal Cavity: Heat Source Locations effect

¹ Department of Physics, Faculty of Sciences, University of 20 août 1955- Skikda, Algeria
² LEAP Laboratory, Department of Mechanical Engineering, University of Mentouri-Constantine 1, Route de Ain El. Bey, Constantine, Algeria
³ Laboratoire de Physique Quantique de la Matière et Modélisation Mathématique (LPQ3M), University of Mascara, Algeria
⁴ Mechanical Engineering Department, College of Engineering, University of Babylon, Babylon City, Iraq
⁵ Laboratoire énergétique de Longwy (FJV/LERMAB), Université de Lorraine,

^* Corresponding author: author@e-mail.org

Abstract

In this work, a numerical study of mixed convection inside a horizontal channel with an open trapezoidal enclosure subjected to a discrete heat source in different locations is carried out. The heat source with the length of ε = 0.75, is maintained at a constant temperature. The air flow with a fixed velocity and a cold temperature enters the channel horizontally. The other walls of the enclosure and the channel are adiabatic. The results are presented in the form of the contours of velocity, isotherms and Nusselt numbers profiles for various heat source locations, Prandtl number (Pr = 0.71) and Reynolds number (Re = 100) respectively. The distribution of the isotherms depends significantly on the position of the heat source. We noted that the best heat transfer is detected where the heat source is placed in the top of the left .