Stagnation-point flow of a hybrid nanofluid using a modified Buongiorno nanofluid model

• Published in: AIP Conference Proceedings
• Main Author: Halim N.A.; Kechil S.A.
• Format: Conference paper
• Language: English
• Published: American Institute of Physics Inc. 2024
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85182564763&doi=10.1063%2f5.0171663&partnerID=40&md5=64175aad227f758cd6e96323648050ec

Numerous models have been proposed over time to study the behavior and properties of hybrid nanofluids. In this paper, a modified Buongiorno nanofluid model (MBNM) is used to investigate the stagnation-point flow of a hybrid nanofluid past a linearly stretching surface. The model combined Buongiorno's nanofluid model with Devi and Devi's hybrid nanofluid model. Compared to other models, it is still not widely used in the literature. It took into consideration the effect of Brownian motion and thermophoresis and the effective properties of the hybrid nanofluid. This paper also imposed the zero normal flux condition at the stretching surface instead of the usual constant nanoparticle concentration. The governing partial differential equations are transformed into ordinary differential equations using appropriate similarity variables. The problem is then solved numerically using the MATLAB function bvp4c. Results indicate that the stagnation parameter can significantly influence the magnitude of the skin friction coefficient. There is no skin friction when the surface moves at the same velocity as the fluid. The Brownian motion parameter is insignificant to both skin friction coefficient and the heat transfer rate of the fluid. It can also be seen that hybrid nanofluid indeed has a higher heat transfer rate as compared to mono-nanofluid. © 2024 Author(s).