Entropy generation analysis of laminar flow of a nanofluid in a circular tube immersed in an isothermal external fluid

摘要: This paper is an analytical study of entropy generation in the laminar flow nanofluids a circular tube. The tube immersed isothermal external fluid – which most general thermal boundary condition but has not been studied much detail literature. Two nanofluids, namely water–Al2O3 and ethylene glycol–Al2O3 have chosen for this study. effects Biot number, non-dimensional temperature difference volume fraction on characteristics shown through graphs physical reasoning behind observed trends discussed threadbare. It that addition nanoparticles beneficial only at smaller Reynolds number less viscous base fluids. Most importantly, it proved generated case bounded by those uniform heat flux wall conditions.