Thermo-Diffusion Effect With Wall Concentration On An Exothermic Fluid Over A Slit Microchannel

Abstract

Flow domains with high-density variations might fail to build successfully in the absence of the thermo-diffusion effect. Thus, this research describes the effect of thermo-diffusion with wall concentration conditions on an exothermic fluid using a superhydrophobic microchannel. One of the parallel plates has been deliberately redefined to have a superhydrophobic surface (SHS), while the other has a no-slip surface. We solve the highly nonlinear, coupled ordinary differential equations representing the mass diffusion, temperature, and momentum using a semi-analytical method (regular perturbation). The heat transfer rate, skin friction, and Sherwood number are computed. Graphical plots have been used to illustrate the behavior of key parameters incorporated in the flow setups. The current study is valid for the limiting case because it relies on comparison to previous research that supports it. This study concludes that increasing the thermo-diffusion parameter increases the flow behavior. Further, it was established that the presence of symmetric wall concentration improves flow growth and reversal in the microchannel. The current study will have applications in chemical and petrochemical engineering, such as isotope separation, cracking, chemical synthesis, geothermal systems, and so on.