Stokes' second problem exact solution for hybrid nanofluid flow along an exponentially accelerating vertical surface

This study explored magnetohydrodynamic (MHD) radiative unsteady free convective hybrid nanofluid flow over an exponentially accelerated vertical plate under the impact of transverse magnetic force with first‐order chemical reaction. The term “hybrid” or “composite” nanofluid refers to a mixture of water‐containing nanoparticles (NPs) of Ag$\rm Ag$and TiO2$\rm TiO_2$that have been dissolved in the base fluid to create the hybrid nanofluid. The crux of the investigation is the attention to two different cases of magnetic force, one being stationary relative to the plate and the other close to the fluid. The Dimensional equations are transformed into dimensionless forms using non‐dimensional quantities. The Laplace Transform technique is used to obtain the closed‐form solutions. Based on those outcomes, the velocity, the temperature, and the concentration distributions of the hybrid nanofluid are evaluated for several sets of values of the physical parameters related to MHD, NP's volume fraction, radiation, porosity, and plate accelerating parameters have been studied through graphs. Furthermore, it is discovered that when the magnetic force is applied to the fluid (L=0)$(L=0)$, the velocity drops with increasing magnetic parameters; nevertheless, the opposite trends occur when the magnetic force is applied to the plate (L=1)$(L=1)$.