Suction effect on MHD flow of Brinkman-type fluid with heat absorption and first-order chemical reaction

Abstract

Suction/injection is a mechanical effect and used to control the energy losses in the boundary layer region by reducing the drag on the surface. In this study, unsteady MHD flow of Brinkman-type fluid with suction/injection, heat absorption, and chemical reaction is investigated and an analytical solution is established. The corresponding results for temperature, concentration, and velocity fields are obtained with the help of the Laplace transformation method analytically. The physical effects of thermal and mass Grashoff number, Prandtl number, Schmidt number, heat absorption parameter, first-order chemical reaction parameter, suction/injection, Brinkman parameter, and magnetic parameter have been discussed graphically. Finally, it is observed that in the presence of suction effect, fluid’s velocity decreases gradually by increasing the value of suction parameter while show an increasing trend for the increasing value of the injection parameter.

Stagnation Point Flow and Heat transfer of Hybrid Nanofluid over a Stretching/Shrinking Cylinder with Suction/Injection Effects

“…Suction/injection is a mechanical effect that controls energy loss in the boundary layer region by reducing surface drag (Yao et al, [22]). According to Epifanov [23], suction is one of the methods of boundary layer control, and its purpose is to reduce the resistance of objects in the external flow or reduce the energy loss in the channel.…”