Table 3 The fitting errors of the effective dynamic viscosity of fresh nanofluids and 3-day fluids

${\stackrel{—}{\left(\frac{\mathrm{\Delta \mu }}{\mu }\right)}}_{\text{MA,nff}}$

${\stackrel{—}{\left(\frac{\mathrm{\Delta \mu }}{\mu }\right)}}_{\text{AM,nff}}$

${\stackrel{—}{\left(\frac{\mathrm{\Delta \mu }}{\mu }\right)}}_{\text{MA,nfo}}$

${\stackrel{—}{\left(\frac{\mathrm{\Delta \mu }}{\mu }\right)}}_{\text{AM,nfo}}$