Insight into the dynamics of heat and mass transfer in nanofluid flow with linear/nonlinear mixed convection, thermal radiation, and activation energy effects over the rotating disk

Suppose the nanoparticle flows across an infinitely large rough disc, which is placed in the z-plane \({\bar{z}}=0\). The investigation has chosen to use the \(({\bar{r}},\varphi ,{\bar{z}})\) spherical coordinates. An unsteady, electrically carrying nanofluid fills the half-filled space \({\bar{z}}\) is greater than 0. Consequently, the disc rotates at a uniform angular velocity of \({\bar{\Omega }}\), leading to the flow being generated towards the positive \(\varphi\). Partial slip conditions are assumed to be relevant as the fundamental level of unevenness at the disk is believed to be…