Drops 1 Friction 1 Friction factors 1 Heat flux 1 Heat transfer 1 Heat transfer and friction factors 1 Heat transfer coefficients 1 Laminar flow 1 Metal nanoparticles 1 Metal oxide nanoparticles 1 Metals 1 Nanofluidics 1 Nanofluids 1 Nanoparticles 1 Numerical methods 1 Particle volume concentrations 1 Pressure drop 1 Rectangular channel 1 Reynolds number 1 Semiconductor nanoparticles Three-dimensional laminar flows 1 Tribology 1 friction factor 1 heat transfer 1 laminar flow 1 rectangular channel 1