Journal of Petroleum Gas & Chemical Engineering
ISSN: 3069-2075 | DOI: 10.64030/3069-2075
Ashikur Rahman, Sadia Islam, Rukaya Parven and Md Aslam Hossain
The results of this research have wide-ranging engineering and industrial implications, especially in the areas of electronic cooling, industrial heat exchangers, energyefficient building design, and thermal management system optimization. The results advance energy storage technology, improve thermal insulation techniques, and improve HVAC system performance. The findings are also useful for microfluidic devices and aerodynamic design, whenever appropriate regulation of fluid flow as well as warmth exchange is crucial for dependability and efficiency. The finite element Galerkin residual method is used to examine transmission of heat properties and natural convection circulate movement in a square cavity with an inside insulated rectangular obstruction. The cavity’s right boundary is maintained at a steady cold the outside temperature, the upper layer is adiabatic and the inner walls of the obstacles are kept adiabatic in one case and heated in another case, and the left and bottom walls are heated unevenly. With COMSOL Multiphysics, the Boussinesq approximationbased governing equations for steadystate natural convection (NC) are numerically resolved. To guarantee the accuracy of the solution, a grid independence test is performed. For Ra ranging from 103 to 106 , the impacts of Rayleigh number (Ra) on velocity, isotherm contours, and Nusselt number distribution are examined. “Lastly, a Comparison between the adiabatic obstacle and heated obstacle on heat transfer rate are presented graphically.” The findings indicate that raising Ra promotes convective motion, which causes heat transfer to move from regimes dominated by conduction to those dominated by convection. Ra considerably raises maximum velocity, and temperature gradients close to heated and cooled walls get steeper. As Ra increases, the Nusselt number distribution shows better convective heat transmission, especially at the bottom and left heated walls.