Novel aspects of entropy generation and rotating non-Newtonian nanomaterial flow

• Entropy optimized magnetohydrodynamic flow of Walter-B nanomaterial in a rotating frame is discussed. • Buongiorno’s model is employed to explore nanoliquid features through random movement and thermophoresis. • Convective constraints for thermal and solutal transfer are discussed. • Heat generation, viscous dissipation and Ohmic heating features are discussed. Present analysis addresses magnetohydrodynamic flow of Walter-B nanomaterial in a rotating frame. Convective constraints for thermal and solutal transfer are considered. Buongiorno’s model is employed to explore nanoliquid features through random movement and thermophoresis. Heat source, Ohmic heating, viscous dissipation and heat and mass transport rates in entropy generation expression are explored. Heat transmission for heat generation, magnetohydrodynamics and dissipation is considered. Isothermal first order reaction along with Soret effect is considered. In recent times main purpose for scientists is to establish a new mechanism that can manage the utilization of suitable amounts of heat energy. Entropy optimization is directly connected to reducing heat energy in thermodynamic systems. Related expressions (PDEs) are converted into dimensionless ordinary systems by suitable transformations. Development of convergent solution through Optimal homotopy analysis method (OHAM) is made. Results illustrating effects of influential variables for entropy rate, flow, temperature and concentration are organized. Skin friction coefficient and heat and mass transport rates are given due attention. Here an increase in Nusselt number and rate of entropy is witnessed while reverse response holds for velocity. Similar response hold for entropy rate and Nusselt number through heat generation. Larger estimation of thermal Biot number lead to rise temperature whereas reverse response for heat transport rate witnessed. Opposite response holds drag force coefficient and flow through viscoelastic variable. Concentration shows improvement against higher solutal Biot number. Reverse behavior of concentration and Sherwood number against higher Schmidt number is witnessed. Bejan number and entropy rate through Brinkman number are different.