Irreversibility analysis in Marangoni forced convection flow of second grade fluid

Marangoni forced convective MHD flow of second grade liquid is scrutinized. Heat source/sink, Joule heating and dissipation are addressed in energy equation. Physical aspects of entropy optimization with binary chemical reaction are addressed. Energy and entropy expressions are computed. Marangoni convection influenced on the surface pressure difference is calculated through temperature gradient, magnetic field and concentration gradient. Nonlinear PDE's are reduced to ordinary one through suitable variables. Nonlinear system is computed for convergent solution by employing of OHAM. Characteristics of different influential parameters on entropy generation, concentration, temperature, Bejan number and velocity are graphically deliberated. Velocity enhances via Marangoni ratio parameter. Velocity and temperature have reverse effects for higher approximation of magnetic variable. For higher second grade fluid parameter the velocity is augmented. An increment occurs in temperature against higher values of Brinkman number and fluid parameter. Concentration decrease versus higher Marangoni ratio parameter. Entropy optimization upsurges for rising values of fluid parameters. Some relevant applications of Marangoni convection effect include atomic reactor, semiconductor processing, thin-film stretching, silicon wafers, soap films, material sciences, nanotechnology and applied physics etc. Entropy supports to progress the importance of numerous engineering and electronic devices development. (paper)