NUMERICAL METHOD APPROACH FOR MAGNETOHYDRODYNAMIC RADIATIVE FERROFLUID FLOWS OVER A SOLID SPHERE SURFACE

Siti Hanani Mat Yasin*, Muhammad Khairul Anuar Mohamed, Zulkhibri Ismail, Basuki Widodo, Mohd Zuki Salleh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)379-385
Number of pages7
JournalThermal Science
Volume25
Issue numberSpecialIssue 2
DOIs
Publication statusPublished - 2021

Keywords

  • Ferrofluid
  • Free convection
  • Magnetite
  • Magnetohydrodynamic
  • Solid sphere
  • Thermal radiation

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