Effect of Buoyancy Force on an Unsteady Thin Film Flow of Al 2 O 3 /Water Nanofluid over an Inclined Stretching Sheet

Sumayyah Alabdulhadi, Sakhinah Abu Bakar, Anuar Ishak (), Iskandar Waini and Sameh E. Ahmed
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Sumayyah Alabdulhadi: Department of Mathematical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, Malaysia
Sakhinah Abu Bakar: Department of Mathematical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, Malaysia
Anuar Ishak: Department of Mathematical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, Malaysia
Iskandar Waini: Fakulti Teknologi Kejuruteraan Mekanikal dan Pembuatan, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, Durian Tunggal 76100, Melaka, Malaysia
Sameh E. Ahmed: Department of Mathematics, Faculty of Science, King Khalid University, Abha 62529, Saudi Arabia

Mathematics, 2023, vol. 11, issue 3, 1-16

Abstract: The present study looks at the heat transfer and the unsteady thin film flow of Al 2 O 3 water nanofluid past an inclined stretching sheet having a buoyancy force effect. The boundary value problem solver (bvp4c) package in Matlab is utilized in solving the converted set of ordinary differential equations (ODEs). The multi-shape Al 2 O 3 nanoparticles’ impact with respect to the flow as well as heat transfer characteristics are studied and visually displayed for certain governing parameter values, which include the mixed convection, inclination angle, magnetic, slip, and Biot number. Thus, the skin friction coefficient and the local Nusselt number are also determined. Here, the platelet shape of Al 2 O 3 nanoparticles possesses a high heat transfer and flow rate based on the outcomes. In addition, increasing the slip and magnetic parameters improves the temperature, whereas increasing the buoyancy and inclination angle parameters has reverse effects. The results also show that increasing the unsteadiness parameter and the magnetic parameter reduces the film thickness.

Keywords: thin film; nanofluid; inclined sheet; shape factor; unsteady flow; convective boundary conditions (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
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