Nanofluids Nanofluidics 28 Heat transfer 11 Nanoparticles 11 Reynolds number 8 Thermal conductivity 8 Heat Transfer enhancement 6 Entropy 5 Ethylene 5 Ethylene glycol 5 Heat transfer coefficients 5 Magnetohydrodynamics 5 Nusselt number 5 nanofluids 5 Entropy generation 4 Fuel cells 4 Heat flux 4 Hybrid nanofluid 4 Ordinary differential equations 4 Proton exchange membrane fuel cells (PEMFC) 4 heat transfer 4 Alumina 3 Aluminum oxide 3 Boundary layer flow 3 Boundary layers 3 Cooling 3 Cooling systems 3 Developing countries 3 Flow of fluids 3 Friction 3