Chemical reaction and radiation impact on unsteady free convective flow through a porous medium past an infinite oscillatory vertical plate

The current investigation is concerned with the effect of chemical reactions and radiation on unsteady free convective flow through a porous medium via an infinitely oscillating vertical plate. The primary goal of this study is to investigate the effects of first‐order homogeneous chemical reactions and thermal radiation on mass flow and heat transmission characteristics. The closed‐form Laplace transformation method is used to obtain exact solutions to the governing equations for concentration, energy and momentum. The impact of various non‐dimensional parameters on fluid velocity, temperature and concentration is graphically depicted. Furthermore, 3‐dimensional surface plots for the Nusselt number and Sherwood number are provided, and the equation for skin friction is derived and demonstrated in tabular form. Investigation simulates that the skin friction increases as the chemical reaction parameter hikes, whereas the fluid concentration reduces as the chemical reaction parameter increases. Further, it was revealed that the augmentation of the radiation parameter decreased the temperature and velocity pattern. It is seen that the primary and secondary velocities reduce due to the increment of the chemical reaction parameter.