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Experimental Investigation on Laminar Forced Convective Heat Transfer of Ferrofluid under Different Modes of Magnetic Field.

Article

Last updated: 04 Jan 2025

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Tags

Mechanical Power Engineering

Abstract

In this paper, the effects of constant, alternating and rotating magnetic fields on the laminar forced convective heat transfer of /water nanofluid (ferrofluid) in a uniformly heated copper tube are investigated experimentally. The local convective heat transfer coefficients are measured in the hydrodynamically fully developed region. The experiments are conducted using ferrofluid with 2.5% mass concentration.  A quadrupole magnetic field system has been designed and constructed to generate the constant, alternating and rotating magnetic fields. For the magnetic field system, different operation modes were also examined and the most efficient mode was obtained. The effects of alternating magnetic field frequency and rotating magnetic field speed were also studied. The primary experiments showed that Uni-pole magnetic field system provides the maximum heat transfer enhancement. A significant enhancement in the local convective heat transfer of ferrofluid was observed by application of constant magnetic field. It was observed that constant magnetic field has provided a maximum local heat transfer enhancement of 119.6% compared to the case without magnetic field for ferrofluid with 2.5% mass concentration and at Re = 2000. This value is decreased to 106.7% and 96.8% by application of rotating and alternating magnetic field, respectively. Additionally, increasing the alternating magnetic field frequency and the rotating magnetic field speed adversely affect the heat transfer enhancement. 

DOI

10.21608/bfemu.2020.94529

Keywords

Ferrofluid, Forced convection, heat transfer enhancement, Constant magnetic field, Alternating magnetic field, Rotating magnetic field

Authors

First Name

Ahmed

Last Name

Tolba

MiddleName

Shohdy

Affiliation

Mechanical Power Engineering Department, University of Mansoura, Egypt

Email

ah_shohdy@mans.edu.eg

City

Mansoura

Orcid

-

First Name

Ahmed

Last Name

Ahmed

MiddleName

Ramzi Abbas

Affiliation

Mechanical Power Engineering Department, University of Mansoura, Egypt

Email

ahmed_ara1979@mans.edu.eg

City

Mansoura

Orcid

-

First Name

Ahmed

Last Name

Kandel

MiddleName

Mohamed Hamed

Affiliation

Mechanical Power Engineering Department, University of Mansoura, Egypt

Email

amhamed@mans.edu.eg

City

Mansoura

Orcid

-

First Name

Hassan

Last Name

El Saadany

MiddleName

Mansour Hassan Khalaf

Affiliation

Mechanical Power Engineering Department, University of Mansoura, Egypt

Email

hmsaadany@yahoo.com

City

Mansoura

Orcid

-

Volume

43

Article Issue

1

Related Issue

13981

Issue Date

2018-03-01

Receive Date

2017-11-28

Publish Date

2020-06-08

Page Start

7

Page End

17

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 43_Issue 1_Pages 7-17.pdf

PDF . 2.1MB

Link

https://bfemu.journals.ekb.eg/article_94529.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=94529

Order

10

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

Experimental Investigation on Laminar Forced Convective Heat Transfer of Ferrofluid under Different Modes of Magnetic Field.

Details

Type

Article

Created At

22 Jan 2023