Journal of Applied Fluid Mechanics1735-35729320160401Entropy Generation Analysis for Variable Thermal Conductivity MHD Radiative Nanofluid Flow through Channel11231134169010.18869/acadpub.jafm.68.228.24475ENMd. S. AlamDepartment of Mathematics, Jagannath University, Dhaka-1100, BangladeshM. A. AlimDepartment of Mathematics, Bangladesh University of Engineering and Technology, Dhaka-1000, BangladeshM. A. H. KhanDepartment of Mathematics, Bangladesh University of Engineering and Technology, Dhaka-1000, BangladeshJournal Article19700101The present work inspects the entropy generation on radiative heat transfer in the flow of variable thermal conductivity optically thin viscous Cu–water nanofluid with an external magnetic field through a parallel isothermal plate channel. Our approach uses the power series from the governing non-linear differential equations for small values of thermal conductivity variation parameter which are then analysed by various generalizations of Hermite- Padé approximation method. The influences of the pertinent flow parameters on velocity, temperature, thermal conductivity criticality conditions and entropy generation are discussed quantitatively both numerically and graphically. A stability analysis has been performed for the rate of heat transfer which signifies that the lower solution branch is stable and physically acceptable, whereas the upper solution branch is unstable.https://www.jafmonline.net/article_1690_2845df7a57bcd2749384d26bc4b20a96.pdf