Abstract
Computational analysis of convective heat transfer characteristics of Al2O3-Cu-water hybrid nanofluid inside a triangular fin-shaped cavity is performed. A heater of different lengths is attached to the base wall while the other walls are kept cold. The governing equations are modeled and transformed into dimensionless forms by utilizing dimensionless variables. For further investigation of the problem obtained, dimensionless coupled partial differential equations with appropriate boundary conditions are solved numerically using Galerkin Finite element method. A grid dependency test is carried out to check the efficiency and accuracy of the proposed numerical method. Impact of heater length, nanoparticle volume fraction and Rayleigh number on the dimensionless velocity, temperature, streamlines, isotherms, local and average Nusselt number is investigated through graphical analysis. It is demonstrated that the local and average Nusselt numbers increase with Rayleigh number and solid volume fraction of both nanoparticles. It is important to note that the results of this investigation are useful for cooling systems in various thermal devices, building structures, and electronic components.