Numerical Study of Ferrofluid Forced Convection Heat Transfer in Tube with Magnetic Field

This research study presents a numerical study on forced convection heat transfer of an aqueous ferrofluid passing through a circular copper tube in the presence of an alternating magnetic field. The flow passes through the tube under a uniform heat flux and laminar flow conditions. The primary obje...

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Main Authors: M. Falsafi, H. Kargarsharifabad
Format: Article
Language:fas
Published: Isfahan University of Technology 2015-07-01
Series:Ravish/hā-yi ̒adadī dar Muhandisī
Subjects:
Online Access:http://jcme.iut.ac.ir/browse.php?a_code=A-10-24-110&slc_lang=en&sid=1
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spelling doaj-dc64bca073fb41909ec96272ad0e05a72020-11-25T00:52:53ZfasIsfahan University of Technology Ravish/hā-yi ̒adadī dar Muhandisī2228-76982423-57412015-07-013411125Numerical Study of Ferrofluid Forced Convection Heat Transfer in Tube with Magnetic FieldM. Falsafi0H. Kargarsharifabad1 This research study presents a numerical study on forced convection heat transfer of an aqueous ferrofluid passing through a circular copper tube in the presence of an alternating magnetic field. The flow passes through the tube under a uniform heat flux and laminar flow conditions. The primary objective was to intensify the particle migration and disturbance of the boundary layer by utilizing the magnetic field effect on the nanoparticles for more heat transfer enhancement. Complicated convection regimes caused by interactions between magnetic nanoparticles under various conditions were studied. The process of heat transfer was examined with different volume concentrations and under different frequencies of the applied magnetic field in detail. The convective heat transfer coefficient for distilled water and ferrofluid was measured and compared under various conditions. The results showed that applying an alternating magnetic field can enhance the convective heat transfer rate. The effects of magnetic field, volume concentration and Reynolds Number on the convective heat transfer coefficient were widely investigated, and the optimum conditions were obtained. Increasing the alternating magnetic field frequency and the volume fraction led to better heat transfer enhancement. The effect of the magnetic field in low Reynolds numbers was higher. The results showed that the modeling data were in a very good agreement with experimental data. The maximum error was around 10%.http://jcme.iut.ac.ir/browse.php?a_code=A-10-24-110&slc_lang=en&sid=1Ferrofluid nanoparticles convective heat transfer alternating magnetic field.
collection DOAJ
language fas
format Article
sources DOAJ
author M. Falsafi
H. Kargarsharifabad
spellingShingle M. Falsafi
H. Kargarsharifabad
Numerical Study of Ferrofluid Forced Convection Heat Transfer in Tube with Magnetic Field
Ravish/hā-yi ̒adadī dar Muhandisī
Ferrofluid
nanoparticles
convective heat transfer
alternating magnetic field.
author_facet M. Falsafi
H. Kargarsharifabad
author_sort M. Falsafi
title Numerical Study of Ferrofluid Forced Convection Heat Transfer in Tube with Magnetic Field
title_short Numerical Study of Ferrofluid Forced Convection Heat Transfer in Tube with Magnetic Field
title_full Numerical Study of Ferrofluid Forced Convection Heat Transfer in Tube with Magnetic Field
title_fullStr Numerical Study of Ferrofluid Forced Convection Heat Transfer in Tube with Magnetic Field
title_full_unstemmed Numerical Study of Ferrofluid Forced Convection Heat Transfer in Tube with Magnetic Field
title_sort numerical study of ferrofluid forced convection heat transfer in tube with magnetic field
publisher Isfahan University of Technology
series Ravish/hā-yi ̒adadī dar Muhandisī
issn 2228-7698
2423-5741
publishDate 2015-07-01
description This research study presents a numerical study on forced convection heat transfer of an aqueous ferrofluid passing through a circular copper tube in the presence of an alternating magnetic field. The flow passes through the tube under a uniform heat flux and laminar flow conditions. The primary objective was to intensify the particle migration and disturbance of the boundary layer by utilizing the magnetic field effect on the nanoparticles for more heat transfer enhancement. Complicated convection regimes caused by interactions between magnetic nanoparticles under various conditions were studied. The process of heat transfer was examined with different volume concentrations and under different frequencies of the applied magnetic field in detail. The convective heat transfer coefficient for distilled water and ferrofluid was measured and compared under various conditions. The results showed that applying an alternating magnetic field can enhance the convective heat transfer rate. The effects of magnetic field, volume concentration and Reynolds Number on the convective heat transfer coefficient were widely investigated, and the optimum conditions were obtained. Increasing the alternating magnetic field frequency and the volume fraction led to better heat transfer enhancement. The effect of the magnetic field in low Reynolds numbers was higher. The results showed that the modeling data were in a very good agreement with experimental data. The maximum error was around 10%.
topic Ferrofluid
nanoparticles
convective heat transfer
alternating magnetic field.
url http://jcme.iut.ac.ir/browse.php?a_code=A-10-24-110&slc_lang=en&sid=1
work_keys_str_mv AT mfalsafi numericalstudyofferrofluidforcedconvectionheattransferintubewithmagneticfield
AT hkargarsharifabad numericalstudyofferrofluidforcedconvectionheattransferintubewithmagneticfield
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