Entropy generation as a practical tool of optimisation for non-Newtonian nano fl uid fl ow through a permeable stretching surface using SLM

In this article, entropy generation on non-Newtonian Eyring-Powell nano fl uid has been analysed through a permeable stretching sheet. The governing fl ow problem is based on linear momentum, thermal energy, and nanoparticle concentration equation which are simpli fi ed with the help of similarity transformation variables. The resulting coupled nonlinear ordinary differential equations are solved numerically with the hel pof Successive Linearization method (SLM) and Chebyshev Spectral collocation method. The novel characteristics of all the physical parameters are discussed with the help of graphs and tables. The expression for local Nusselt number and local Sherwood number is also taken into account. It is observed that velocity pro fi le increases due to the greater in fl uence of suction parameter. Moreover, Brownian motion and thermophoresis parameter signi fi cantly enhance the temperature pro fi le, however Brownian motion parameter shows converse behaviour on nanoparticle concentration pro fi le. Entropy pro fi le acts as an increasing function of all the pertinent parameters.

Nano fl uid; Optimisation; Eyring-Powell fl uid; Stretching sheet; Entropy generation