Analysis of activation energy and its impact on hybrid nanofluid in the presence of Hall and ion slip currents

Chemical reaction is considered with entropy generation in mixed convection magnetohydrodynamic (MHD) hybrid nanoliquid flow across a porous medium containing Hall and ion slip currents. The main focus of this research is the entropy production, SWCNT-MWCNT/water hybrid nanofluids and Hall effect. The complex coupled system of differential equations is transformed into a non-dimensional form through an acceptable similarity transformation. To measure the rate of heat transfer the volume fraction of MWCNT is taken fixed 3% and for SWCNT changes 1-5%. The influence of different flow field parameters on axial velocity, temperature distribution, concentration field, entropy generation, and Bejan number is expressed graphically. The comparison of nanofluid and hybrid nanofluid is shown graphically. The enhances value of variable viscosity parameter, porous parameter, and coefficient of inertia decreases the velocity distribution. Further the solid volume fraction enhances the velocity and temperature distribution.