Marangoni Forced Convective Flow of Second Grade Fluid with Irreversibility Analysis and Chemical Reaction

Here we analyze the Marangoni convective magnetohydrodynamic flow of second grade liquid. Heat transportation is discussed through Joule heating and viscous dissipation. Characteristics of thermo-diffusion and diffusion-thermo are also considered. Gibbs–Marangoni effect is the solutal transfer along the boundary between liquids as a result of gradient of surface tension. Furthermore Bénard–Marangoni convection is the temperature dependence phenomenon. Irreversibility communication is developed through thermodynamic second law. Characteristics of entropy optimization with chemical reaction are discussed. Nonlinear system is converted to ordinary system. Optimal Homotopy analysis method (OHAM) is employed to get convergent solutions. Variation of different sundry variables on velocity field, concentration, entropy rate, Bejan number, and temperature are scrutinized. Larger Marangoni ratio variable boosted the velocity field. Velocity field is reduced for higher magnetic variable. An augmentation occurs in temperature versus Dufour number. Temperature distribution boosted against magnetic and fluid variables. Concentration gets reduced versus larger Soret number. Higher Marangoni ratio variable decays the concentration. Larger approximation of magnetic variable enhances entropy rate. Bejan number and entropy rate have opposite trend for fluid variable. Entropy rate boosted via higher Brinkman number.