06.2020.472.486

Combined free and forced convection inside an enclosure

Author(s):
Mustafa Abdul Salam Mustafa†, Lina Jassim‡, Nazar Yasir Jasim‡†, Laith Jaafer Habeeb‡‡

Affiliation(s):

†Air-Conditioning and Refrigeration Dep., Al Rafidain University Collage, Bagdad, Iraq

‡Mechanical Engineering Department, Mustansiriyah University, Baghdad, Iraq

‡†Biomedical Engineering Department University of Technology, Baghdad, Iraq,

‡‡Training and Workshops Center, University of Technology, Bagdad, Iraq,

Corresponding Author Email: Mustafa.altalib77@gmail.com, dr.linajassim@uomustansiriyah.edu.iq,nazarengineer777@gmail.com, laithhabeeb1974@gmail.com

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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.