Title of article :
Combined free and forced convection inside an enclosure
Author/Authors :
Mustafa, Mustafa Abdul Salam Air-Conditioning and Refrigeration Dep. - Al Rafidain University Collage, Bagdad, Iraq , Jassim, Lina Mechanical Engineering Department - Mustansiriyah University, Baghdad, Iraq , Jasim, Nazar Yasir Biomedical Engineering Department - University of Technology, Baghdad, Iraq , Habeeb, Laith Jaafer Training and Workshops Center - University of Technology, Bagdad, Iraq
Abstract :
This paper presents a numerical simulation to study the enclosed with force and free heat convection. Galerkin finite element approach was used for the numerical analysis, the investigated enclosure are square geometry with an inlet at the bottom and an opposite outlet at the top. Heat was applied to one side of the enclosure while the other walls were considered as an insulated wall. Reynolds number was changed during the tested from 25 to 300 (25, 50, 100, 150, 200, 250, 300), Richardson number was changed during the tested from 0 to 5 (0, 0.5, 1, 2.5, 5). The Nusselt number was calculated along the heated wall and as an average value, it was found that as the Reynolds and Richardson numbers increases, the Nusselt number is also increased. The isothermal lines and the streamlines were illustrated for different Reynolds and Richardson numbers.
Keywords :
Enclosure , Force convection , Finite elements , Nusselt number , Reynolds number , Richardson number
Journal title :
Journal of Mechanical Engineering Research and Developments
