Chemical reaction in peristaltic motion of MHD couple stress fluid in channel with Soret and Dufour effects

Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Tasawar Hayat, Sabia Asghar, Anum Tanveer, Ahmed AlsaediAbstractThis paper looks at the peristaltic motion of MHD couple stress fluid in an inclined asymmetric channel. Simultaneous effects of heat and mass transfer are considered. Soret and Dufour features lead to the coupled differential systems. Channel walls satisfy the convective conditions of heat and mass transfer. Exact solutions for the stream function and pressure gradient are derived. Temperature and concentration are obtained numerically. Graphical illustrations for axial velocity, temperature, concentration and streamline patterns are developed. Physical interpretation of obtained results has been presented. It can be seen that both Soret and Dufour numbers reduce the concentration field while reverse effect is seen towards temperature for both numbers. It is also observed that concentration reduces towards destructive chemical reaction and enhances for constructive chemical reaction. The heat transfer Biot number gives rise to fluid temperature. Further more the mass transfer Biot number decreases the concentration.

Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research