Abstract
A numerical investigation is carried out applying a two phase approach on convective heat transfer of Al2O3 nanofluid flowing through a circular pipe. Five different Reynolds-averaged Navier-Stokes (RANS) turbulence models are employed by using the ANSYS-CFX® code. The analyses are performed for five different Reynolds number and three particle volume fractions. The results show that ω based models give very close results in themselves and that these models show better performance than e based models. SST k-ω model’s predictions are slightly better than those of other ω based models. The performance of this model increases with a decreasing particle volume fraction. It is clearly seen that a two phase approach gives satisfactory results when it is used with ω based models.
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