Heat and mass transfer enhancement in nonlinear mixed convective flow: Buongiorno model and melting heat phenomenon

Background and objective: Melting heat transport is important in different developments comprising melting of permafrost, melting of soil, semiconductor preparation, sustainable energy enhancement, magma solidification, electronics cooling, a manufacturing development modeling, permafrost melting and frozen grounds thawing. Here nonlinear mixed convection in magnetohydrodynamic nanomaterial flow is explored. Flow through stretching boundary is computed. Analysis for melting heat is carried out. Radiation, heat generation and Joule heating in thermal equation are taken. Arrhenius activation energy through chemical reaction is discussed. Random motion and thermophoresis characteristics are discussed. Methodology: Nonlinear governing expressions are solved by employing optimal homotopy analysis technique (OHAM). Results: Consequence of various involved parameters for fluid flow, thermal field, rate of entropy generation and concentration are reported graphically. Temperature and velocity for higher magnetic parameter are reverse. An enhancement in flow against melting is noticed. An improvement of thermal field and entropy are shown for radiation. An increase is witnessed for concentration against random motion variable. An increase is witnessed for temperature against Brownian and thermophoresis variables. Concentration decreases for melting and activation energy variables. Entropy generation enhancement is observed for melting and magnetic variables.