Slip flow of SWCNT–H₂O, TiO₂–H₂O, MWCNT–H₂O, and GO–H₂O nanofluids between two spinning circular disks

Abstract The heat transfer and flow properties of nanofluids are studied using two co‐axial, stretched, and rotating disks containing the porous media and slip boundary conditions. The water‐based nanofluid is formed by using SWCNT (single‐walled carbon nanotubes), (titanium dioxide), MWCNT (multiwalled carbon nanotubes), GO (graphene oxide) as nanoparticles. The nonlinear PDEs are converted into ODEs using the Von Karman similarity transformation. The finite difference method is used to solve the transformed equations. The velocity profiles in the axial, radial, and tangential directions and the temperature profiles are analyzed through graphs, accompanied by interpretations based on physical principles. The energy equation is modeled using the Cattaneo–Christov heat flux model. When the velocity slip parameter rises, axial velocity decreases near the lower disk but increases near the end of the upper disk, while there is a reduction in radial velocity near the end of both disks. The skin friction coefficient and Nusselt number are computed in the present study for governing parameters.