Dual solutions for nanofluid flow past a curved surface with nonlinear radiation, Soret and Dufour effects

Abstract

Present work explores the numerical study of heat and mass transfer in nanofluid flow past a curve shaped stretchable (linearly/nonlinearly) geometry. The impact of Lorentz force caused by magnetic field, nonlinear radiation due to high temperature near the surface, frictional heating by virtue of viscous dissipation and cross diffusion by virtue of concentration and temperature differences are pondered while formulating the problem. The thermo physical properties of water and silver nanoparticles are used for calculations. Hamilton-Crosser model is considered for effective thermal conductivity of nanofluid. Shooting method and R.K. fourth order algorithm are adopted to solve the nonlinear coupled differential equations of the problem. The concentration, temperature and velocity fields are studied graphically for distinct values of flow parameters. Numerical values also calculated to know the impact of same parameters on mass and heat transfer coefficients. Results depict that mass and heat transfer performance in the flow via nonlinear curved surface is better when compared with the flow over linearly curved surface. As usually Eckert number and temperature ratio parameter boosts the fluid temperature in the present flow situation also.