Entropy optimized flow of couple stress nanomaterial subject to homogeneous-heterogeneous chemical reactions

Nonlinear mixed convective flow of couple stress nanoliquid is analyzed. Slip condition and entropy generation are under consideration. Thermal relation comprises heat source, radiation, magnetohydrodynamic and viscous dissipation. Features of nanoliquid are added by employing Buongiorno model. Isothermal cubic autocatalysis chemical reactions are considered. Nondimensional ordinary differential expressions are developed through appropriate transformations. Nonlinear dimensionless ordinary systems are tackled through ND-Solve method. Analyses for entropy rate, temperature, velocity and concentration against emerging parameters are examined. Numerical results for heat transfer rate and skin friction are examined. Enhanced entropy rate and temperature are noticed through magnetic variable whereas reverse impact detected for velocity. Similar behaviors for velocity and drag force coefficient are witnessed through couple stress liquid parameter. Larger radiation variable corresponds to intensify the Nusselt number and temperature. An opposite trend of thermal distribution is noticed for Prandtl and Eckert numbers. Entropy rate is optimized versus higher Brinkman number. Larger homogeneous reaction variable leads to decrease the concentration distribution.