Numerical Investigation of Heat Transfer in Enclosed Square Cavity

Reyadh Ch. Al-Zuhairy†, Muna Hameed Alturaihi‡, Faez Abid Muslim Abd Ali‡, Laith Jaafer Habeeb‡†


†Ministry of Higher Education and Scientific Research, Baghdad, Iraq

‡University of Kufa / Faculty of Engineering / Mechanical Engineering Department

‡†University of Technology, Training and Workshops Center, Baghdad, Iraq

Corresponding Author Email: 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.

Numerical investigation was performed to investigate the convection heat transfer in a square cavity that have been vented vertically. Different values of Reynolds number used (50, 100, 200, and 250) with three different opening to side length ratio (S/L) in the cavity (0.1, 0.2, and 0.3). Richardson number varied between (1, 5, and 10). Galerkin finite element utilized for the numerical simulations, the numerical model was validated and the result obtained was acceptable. The results showed that as Reynolds number increase inside the cavity, the Nusselt number is also increased. From the inlet opening of the cavity to the exit, Nusselt number seamed to decrease. Increasing the value of Richardson number at the same value of Reynolds number increases the Nusselt number within the cavity. Streamlines patterns and isothermal patterns were also shown for the mixed convection flow inside the cavity.