Finite element analysis of water-based Ferrofluid flow in a partially heated triangular cavity

Purpose This study aims to deal with the numerical investigation of ferrofluid flow and heat transfer inside a right-angle triangular cavity in the presence of a magnetic field. The vertical wall is partially heated, whereas other walls are kept cold. The effects of thermal radiation are included in...

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Bibliographic Details
Published in:International journal of numerical methods for heat & fluid flow 2021-09, Vol.31 (10), p.3132-3147
Main Authors: Usman, Muhammad, Hamid, Muhammad, Khan, Zafar Hayat, Ul Haq, Rizwan, Khan, Waqar Ahmed
Format: Article
Language:English
Subjects:
Boundary conditions
Cold
Computational fluid dynamics
Dimensionless numbers
Engineering
Ferrofluids
Finite element analysis
Finite element method
Finite volume method
Fluid flow
Hartmann number
Heat transfer
Heating
Iron oxides
Length
Magnetic field
Magnetic fields
Momentum
Nanoparticles
Nusselt number
Radiation
Streamlines
Thermal radiation
Viscosity
Water analysis
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Summary:Purpose This study aims to deal with the numerical investigation of ferrofluid flow and heat transfer inside a right-angle triangular cavity in the presence of a magnetic field. The vertical wall is partially heated, whereas other walls are kept cold. The effects of thermal radiation are included in the analysis. The governing equations including continuity, momentum and energy equations are converted to nondimensional form using viable variables. Design/methodology/approach Finite element method (FEM)-based simulations are performed using finite element approach to investigate the effects of the volume fraction of ferroparticles (Fe3O4), the length of the heating element and the dimensionless numbers including Rayleigh and Hartmann numbers on the streamlines, isotherms and Nusselt number. Findings It is demonstrated that both horizontal and vertical velocity components increase with the length of the heating element, whereas the dimensionless temperature decreases the heating domain. It is observed that an increase of 10% in the volume fraction of ferroparticles increases Nusselt number more than 12%, and 20% increase in the volume fraction of ferroparticles increases more than 30%, depending upon the length of the heating element. Originality/value This is a new study showing the significance of the magnetic nanoparticles for the enhancement of heat transfer rate in a triangular cavity.
ISSN:0961-5539
1758-6585
DOI:10.1108/HFF-12-2019-0930