Entropy optimization of MHD Casson-Williamson Fluid Flow over a convectively heated stretchy sheet with Cattaneo-Christov dual Flux

This work performs a comparative investigation into Casson-Williamson uid ow over a heated porous stretchy sheet. The energy and mass transfer equations are modeled by Cattaneo-Christov theory. The governing ow models are altered into an Ordinary Di erential Equation (ODE) model through proper transformations. The Homotopy Analysis Method (HAM) scheme is applied to determine the series solutions. The responses of diverse ow variables to uid speed, uid warmness, liquid concentration, skin friction coe cient, local Nusselt number, local Sherwood number, local entropy generation number, and Bejan number are analyzed through graphs and charts. It was found that the uid speed would subside following an increase in values of the magnetic field, porosity, Casson uid, Williamson uid, and injection/suction parameters. The uid warmness is increased due to high-level radiation, convective heating, and heat generation/absorption parameters and it suppresses the previous highs when enriching the convective cooling parameter. The chemical reaction parameter causes an increase in the thickness of the solutal boundary layer. The larger skin friction coe cient occurs in Casson uid than Williamson uid. The local entropy generation is attenuated upon increase in the Casson and Williamson parameters and it aggravates when the Biot number rises. The Bejan number is elevated when the Reynolds, Brinkman, and Biot numbers experience an increase.