RETRACTION: Entropy optimization in MHD nanofluid flow over a curved exponentially stretching surface with binary chemical reaction and Arrhenius activation energy (Retraction of Vol 4, art no 075021, 2020)

In this examination article, the production of entropy is investigated through the steady state nanofluid flow with MHD past a curved exponentially stretched surface. By keeping the knowledge of curved surfaces in mind the existing model has been constructed. Put on the limit layer assesses on the Navier-Stocks equation to get the nonlinear coupled PDEs to portray the current nanofluid flow. Then some suitable similarity transformation has been selected to transform these coupled PDEs to non-dimensional coupled ODEs. Coupled ODEs were solved numerically through HAM. The impacts of parameters which are contained in ODEs are displayed by graphs while tables of Re-s 1/2 C-f, Re-s 1/2 Nu and Re-s 1/2 are showed. The physical features of relevant parameters have been deliberated by plotting the graphs of velocity, temperature, concentration profile, entropy optimization, and Bejan number. Numerical conclusions of gradients of velocity and heat are deliberated through tables by various physical variables. The objective of our study was to examine the rate of warmth transmission through nanofluid. Astonishingly, for thermal border level thickness, solutal border level thickness and momentum border layer thickness became greater when lambda > 0, as associated with the situation when lambda< 0. Entropy generation is a growing function of Brinkman number and local Reynolds number. Moreover, Bejan number reduces in closed vicinity of the stretching sheet and grows far away from it with augmenting values of the magnetic parameter.