Irreversibility analysis for nanofluid (NiZnFe2O4-C8H18 and MnZnFe2O4-C8H18) flow with radiation effect

Abstract

Here we simulate heat transfer analysis for radiative flow of nanomaterials by a curved stretched sheet. Radiation, heat generation and dissipation effects are addressed in heat expression. Nickel zinc ferrite (NiZnFe2O4) and manganese zinc ferrite (MnZnFe2O4) are used as the nanoparticles and engine oil (C8H18) as a base liquid. Irreversibility analysis modeling is developed through thermodynamics second law. Entropy generation reduction guarantees the improvement of thermal system performance. Nonlinear differential system is reduced to an ordinary one through suitable transformation. The given system is solved through ND-solve method. Velocity, pressure, temperature, entropy rate and Bejan number variations against different influential variables are scrutinized graphically for both NiZnFe2O4 and MnZnFe2O4 nanoparticles. Performance of sundry parameters on Nusselt number and velocity gradient are analyzed for both NiZnFe2O4 and MnZnFe2O4 nanoparticles. An improvement in velocity field is noted for curvature variable. An improvement in radiation rises temperature. For higher values of volume fraction variable both thermal and velocity fields are augmented. Radiation variable leads to improve the entropy generation and temperature for both nanoparticles. An increment in temperature is seen against Eckert number. Bejan number is reduced versus volume fraction. Velocity gradient is enhanced for curvature variable. An increment in Nusselt number is found is noticed via volume fraction.