![Sample our Engineering & Technology journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5933/TOC-Subject-Sample-2021-Engineering-Tech.jpg"})
Abstract
Experimental and numerical study of natural convection of air in a partially open square enclosure with two internal heat sources, located at the respective centers of the bottom wall and the right vertical wall, are performed. The left vertical wall, made up of an aluminum plate, has a partial opening that occupies 12.8%, 25%, and 50% of the wall. The effect of opening sizes and Rayleigh numbers on natural convective heat transfer is evaluated. The temperature distribution and the average Nusselt numbers at various Rayleigh numbers are obtained experimentally using the Mach-Zehnder interferometer. These results are compared with the temperature distribution obtained from a numerical simulation performed using ANSYS Fluent 2020 and a maximum deviation of below 8% is obtained with respect to the average Nusselt number. The fringe patterns are found to be highly clustered at higher Rayleigh numbers and larger opening sizes. The average Nusselt number is observed to be higher at higher Rayleigh number and larger opening. The primary circulating cell is stronger for 50% opening which leads to higher heat transfer.
Acknowledgements
The authors are highly thankful to Indian Institute of Technology Bhubaneswar for providing the required research facility.
Disclosure statement
No.
Additional information
Notes on contributors
Sonu Kumar
Sonu Kumar is a research scholar in the School of Mechanical Sciences at Indian Institute of Technology Bhubaneswar. His research activities focus on experimental and numerical investigations on natural convection and conjugate heat transfer.
Swarup Kumar Mahapatra
Swarup Kumar Mahapatra is a professor in the School of Mechanical Sciences at Indian Institute of Technology Bhubaneswar. His research activities focus on thermal radiation modeling, conjugate heat and mass transfer, bio-heat transfer, complex fluid flow, and flow in porous medium.
Sidharth Sankar Das
Sidharth Sankar Das is a research scholar in the School of Mechanical Sciences at Indian Institute of Technology Bhubaneswar. His research activities focus on numerical investigations on bio-heat transfer.