**Dianchen Lu 1, Muhammad Ramzan 2,3,\*, Shafiq Ahmad 4, Ahmad Shafee <sup>5</sup> and Muhammad Suleman <sup>1</sup>**


Received: 19 September 2018; Accepted: 21 November 2018; Published: 27 November 2018

**Abstract:** The present investigation addresses the flow of hybrid (nickel–zinc ferrite and ethylene glycol) nanoliquid with entropy optimization and nonlinear thermal radiation coatings past a curved stretching surface. Analysis was carried out in the presence of magnetohydrodynamic, heat generation/absorption, and convective heat and mass flux conditions. Solution of the modeled problem was attained numerically using MATLAB built-in function bvp4c. Impacts of prominent parameters on betrothed distributions were depicted through graphs and were well supported by requisite discussions. Numerically calculated values of Sherwood number were established in a tabulated form and were scrutinized critically. An excellent concurrence was achieved when results of the presented model were compared with previously published result; hence, dependable results are being presented. It was observed that concentration field diminished with increasing values of curvature parameter, though the opposite trend was noticed for velocity and temperature distributions. Further, it was detected that Nusselt number decreased with augmented values of radiation and curvature parameters.

**Keywords:** coatings; curved stretched surface; nanoliquid; nonlinear thermal radiation; entropy generation
