Heat flux Heat transfer 12 Boundary layers 5 Computational fluid dynamics 5 Drops 5 Heat Transfer enhancement 5 Nanofluidics 5 Rayleigh 5 Reynolds number 5 heat flux 5 heat transfer 5 Benard convection 4 Bénard convection 4 Cooling 4 Heat transfer coefficients 4 Nanofluids 4 Natural convection 4 Numerical methods 4 Pressure drop 4 Proton exchange membrane fuel cells (PEMFC) 4 Thermal conductivity 4 Boundary layer flow 3 Buoyancy 3 Energy balance 3 Evapotranspiration 3 Fluid layer 3 Heat conduction 3 Heat convection 3 Heat transport 3 Kinetic energy 3