## THERMAL SCIENCE

International Scientific Journal

### Thermal Science - Online First

online first only
### Impact of wavy texture and hybridity of nanofluid on heat transfer augmentation over the frustum of cone geometry

**ABSTRACT**

In this article, the impact of water-based hybrid nanofluid on heat transfer characteristics along the wavy frustum of the cone is examined. We considered hybrid nanofluid containing and nanoparticles. Non-similar form of the constitutive equations is obtained by using an appropriate set of transformations and results are achieved by employing transformed into compact non-similar form and are solved by the famous numerically implicit finite difference scheme known as Keller-box technique. The influence of the hybrid nanoparticles' volume fraction, frustum of cone half-angle and the wavy texture parameters on the Nusselt number and skin friction are scrutinized and comparison is made between the wavy frustum of the cone and flat frustum of the cone through numerical data. It is observed that the rise in the truncated cone half-angle leads to an increase in skin friction and Nusselt number. Titania - water nanofluid has lower heat transfer rates as compared to copper-titania hybrid nanofluid. The increasing of the truncated cone half-angle enhances the heat transfer rates. Generally, the results established from this analysis can be used as a benchmark for improving the natural convection heat transfer performance along the frustum of cone wavy texture.

**KEYWORDS**

PAPER SUBMITTED: 2020-08-22

PAPER REVISED: 2020-10-07

PAPER ACCEPTED: 2020-10-10

PUBLISHED ONLINE: 2020-11-07

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