Evidently, temperature has an inherent relation with viscosity. The whole nanofluid research community recommends temperature as the most critical and influential
parameter in this regard. The overall report indicates a very
common downward trend in viscosity with an increase in
temperature. As the temperature increases, the intermolecular attraction between the nanoparticles and their base
fluids weakens [53]. Hence, the viscosity of nanofluids
decreases with the increase in temperature. According to
Andrade equation [54], the viscosity has the following
relationship with temperature:
lng ¼ A þ B =T ; ð27 Þ
where g is the viscosity, T is the temperature and A and B
are constants.