Radiation effect on transient natural convective MHD flow over a fixed cylinder in a permeable medium with heat and mass transport

The thermal radiation impact on the unsteady magnetohydrodynamic flow of a Newtonian fluid past a stationary vertical cylinder with heat and solute transfer has been investigated. The viscous fluid is slightly electrically conductive, and the stationary cylinder is placed in a permeable medium. The linear PDEs that govern the flow is transformed to non-dimensional by suitable non-dimensional quantities, and the standard Laplace transform approach is used to derive the closed-form solutions. The impacts of the flow parameters are discussed through a table and graphs. It is found that the unsteady fluid velocity enhances with a rise in radiation parameter, permeability parameter and time, whereas it falls with reduced magnetic effect. The absolute skin friction value rises with an increase in thermal radiation and porosity parameter but falls with a rise in Schmidt number and transverse magnetic field. © 2022 Informa UK Limited, trading as Taylor & Francis Group.