Abstract
This laboratory study investigates the effect of temperature and volume fraction of nanoparticles on the dynamic viscosity (μnf) of MWCNT - WO3 / water - Ethylene glycol (80:20) nanofluid. The nanofluids are synthesized using a two-step method by dispersion of nanoparticles in the base fluid. Nanofluid is synthesized in the volume fraction of nanoparticles of φ=0.1–0.6%. After ensuring the stability of the nanofluid, μnf is measured at a temperature range of T = 25 °C–50 °C. The results show that as the φ increases at a constant temperature, the μnfincreases. On the other hand, as the temperature increases at a constant φ, μnfof the fluid decreases. Finally, a mathematical model is proposed as a function of temperature and φ for estimation of theμnf. The comparison of the results of the proposed relationship and the experimental results reveal the desired accuracy of the proposed model for this nanofluid.
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