Numerical method approach for magnetohydrodynamic radiative ferrofluid flows over a solid sphere surface

• Main Authors: Siti Hanani, Mat Yasin, Muhammad Khairul Anuar, Mohamed, Zulkhibri, Ismail, Widodo, Basuki, Mohd Zuki, Salleh
• Format: Article
• Language: English
• Published: Serbian Society of Heat Transfer Engineers 2021
• Subjects: QA Mathematics; TH Building construction; TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://umpir.ump.edu.my/id/eprint/33192/1/Numerical%20method%20approach%20for%20magnetohydrodynamic%20radiative%20ferrofluid%20flows%20over.pdf; http://umpir.ump.edu.my/id/eprint/33192/; https://doi.org/10.2298/TSCI21S2379M; https://doi.org/10.2298/TSCI21S2379M
• Institution: Universiti Malaysia Pahang

In this paper, the theoretical study on the laminar boundary-layer flow of ferrofluid with influences of magnetic field and thermal radiation is investigated. The viscosity of ferrofluid flow over a solid sphere surface is examined theoretically for magnetite volume fraction by using boundary-layer equations. The governing equations are derived by applied the non-similarity transformation then solved numerically by utilizing the Keller-box method. It is found that the increments in ferroparticles (Fe3O4) volume fraction declines the fluid velocity but elevates the fluid temperature at a sphere surface. Consequently, the results showed viscosity is enhanced with the increase of the ferroparticles volume fraction and acts as a pivotal role in the distribution of velocity, temperature, reduced skin friction coefficient, and reduced Nusselt number of ferrofluid.