text: Thermal conductivity, viscosity, density, specific heat, and surface tension are considered some main thermophysical properties of nanofluids. Various parameters like nanoparticle type, size, and shape, volume concentration, fluid temperature, and nanofluid preparation method have effect on thermophysical properties of nanofluids. 
  *Viscosity of nanofluids
  *Density of nanofluids
  *Thermal conductivity of nanofluids