Numerical study of Bödewadt slip flow on a convectively heated porous disk in a nanofluid

The present study is concerned with the numerical assessment of the Bodewadt slip flow of nanofluid above a rough permeable surface. Practically suitable convective type conditions are employed for the analysis. Recent research has revealed that sufficient suction at the boundary is required for the energy equation to have a physically consistent solution. Distribution of velocity and temperature above the disk is computed and elucidated for the full range of parameters. The solutions are found to be consistent with the open literature concerning pure Bodewadt flow. The variation in heat transfer rate with solid volume fraction is calculated for five different types of nanoparticles. Special focus is given to how the solid volume fraction affects the wall shear, volumetric flow rate and heat transfer rates when boundary suction and wall roughness effects are taken into consideration. The results detected that the wall suction effect accelerates the heat transfer process of nanoparticle working fluid; although, the wall shear grows substantially upon increasing the strength of the boundary suction.