Abstract
This paper addresses the three-dimensional flow of a viscous fluid due to a rotating disk with variable thickness. The Cattaneo-Christov heat flux model is used to examine the process of heat transfer. A system of ordinary differential equations is obtained by utilizing similarity transformations. The homotopy concept is used to obtain convergent series solutions. The impact of various parameters on fluid flow, temperature and skin friction coefficient is discussed graphically. Here we observed that for larger values of shape parameter the radial and tangential velocities and temperature distribution are increased. It is also revealed that an increase in the disk thickness index decreases the magnitude of the skin friction coefficient.