Entropy generation and heat transfer analysis of alumina and carbon nanotubes based hybrid nanofluid inside a cavity

This article presents numerical investigation of heat transport, flow and entropy generation features of hybrid nanofluid, made up of Aluminum oxide, single – walled carbon nanotubes as nanoparticles and Ethylene glycol as base fluid, inside a square cavity. The resultant non-dimensional equations are numerically assessed by employing finite difference technique. The variations in the scatterings of isotherms, streamlines and entropy generation with diverse values of radiation parameter ( 0.01 ≤ R ≤ 0.1 ) , volume fraction of parameter of alumina nanoparticle ( 0.01 ≤ ϕ 2 ≤ 0.1 ) Prandtl number ( 5.2 ≤ Pr ≤ 8.2 ) , Rayleigh number ( 10 4 ≤ Ra ≤ 10 5 ) , volume fraction parameter of single—walled carbon nanotubes ( 0.01 ≤ ϕ 1 ≤ 0.1 ) and magnetic parameter 0.1 ≤ M ≤ 0.7 have schemed through graphs. Rate of heat transfer augments from 8.2% to 17.6% in the case single—walled carbon nanotubes of volume fraction 0.05 are suspending into the base fluid, whereas, heat transfer rate rises from 8.2% to 12.4% in the case of alumina nanoparticles of volume fraction 0.05 are suspending into the base fluid.