Unsteady flow and heat transfer of a ferrofluid between two rotating, vertical moving and stretching disks

Abstract

Unsteady flow and heat transfer of a magnetic fluid between two rotating disks is investigated. Both the disks are stretchable and the lower disk moves in the vertical direction. A new approach of similarity transformation is adopted to transform the equation of continuity, momentum, and the energy equation into ordinary nonlinear coupled differential equations. The numerical solution of the converted nonlinear differential equations is obtained using the finite element method. The effects of magnetization force, rotational viscosity, Prandtl number, and Eckert number on the velocity and temperature distributions are studied. The impact of stretching, movement, and rotation of the disk is also considered in this computational study. The skin friction coefficients and heat transfer rate on the lower disk for different physical parameters are calculated. Different types of motion of the disks and the magnetization force are crucial aspects in the stress distribution and heat transfer rate near the lower disk.

Hydromagnetic boundary layer flow with heat transfer past a rotating disc embedded in a porous medium

“…Turkyilmazoglu 23 focused on water‐based nanofluids and elaborated the impact of nanoparticles on heat transfer and flow pattern with a rotating disc. Moreover, Griffiths, 24 Ram et al, 25 Joshi et al, 26 and Bhandari and Husain 27 also worked on the problem related to the rotating disc.…”