3D Magneto-buoyancy-thermocapillary convection of CNT-water nanofluid in the presence of a magnetic field

Lioua Kolsi; Salem Algarni; Hussein A. Mohammed; Walid Hassen; Emtinene Lajnef; Walid Aich; Mohammed A. Almeshaal

doi:10.3390/pr8030258

3D Magneto-buoyancy-thermocapillary convection of CNT-water nanofluid in the presence of a magnetic field

Lioua Kolsi^*, Salem Algarni, Hussein A. Mohammed, Walid Hassen, Emtinene Lajnef, Walid Aich, Mohammed A. Almeshaal

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Anumerical study is performed to investigate the effects of adding Carbon Nano Tube (CNT) and applying a magnetic field in two directions (vertical and horizontal) on the 3D-thermo-capillary natural convection. The cavity is differentially heated with a free upper surface. Governing equations are solved using the finite volume method. Results are presented in term of flow structure, temperature field and rate of heat transfer. In fact, results revealed that the flow structure and heat transfer rate are considerably affected by the magnitude and the direction of the magnetic field, the presence of thermocapillary forces and by increasing nanoparticles volume fraction. In opposition, the increase of the magnetic field magnitude leads to the control the flow causing flow stabilization by merging vortexes and reducing heat transfer rate.

Original language	English
Article number	258
Journal	Processes
Volume	8
Issue number	3
DOIs	https://doi.org/10.3390/pr8030258
State	Published - 1 Mar 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 by the authors.

Keywords

Buoyancy thermocapillary convection
CNT-water nanofluid
Flow control
Magnetic field direction
Marangoni number

ASJC Scopus subject areas

Bioengineering
Chemical Engineering (miscellaneous)
Process Chemistry and Technology

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10.3390/pr8030258

Cite this

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title = "3D Magneto-buoyancy-thermocapillary convection of CNT-water nanofluid in the presence of a magnetic field",

abstract = "Anumerical study is performed to investigate the effects of adding Carbon Nano Tube (CNT) and applying a magnetic field in two directions (vertical and horizontal) on the 3D-thermo-capillary natural convection. The cavity is differentially heated with a free upper surface. Governing equations are solved using the finite volume method. Results are presented in term of flow structure, temperature field and rate of heat transfer. In fact, results revealed that the flow structure and heat transfer rate are considerably affected by the magnitude and the direction of the magnetic field, the presence of thermocapillary forces and by increasing nanoparticles volume fraction. In opposition, the increase of the magnetic field magnitude leads to the control the flow causing flow stabilization by merging vortexes and reducing heat transfer rate.",

keywords = "Buoyancy thermocapillary convection, CNT-water nanofluid, Flow control, Magnetic field direction, Marangoni number",

author = "Lioua Kolsi and Salem Algarni and Mohammed, \{Hussein A.\} and Walid Hassen and Emtinene Lajnef and Walid Aich and Almeshaal, \{Mohammed A.\}",

note = "Publisher Copyright: {\textcopyright} 2020 by the authors.",

year = "2020",

month = mar,

day = "1",

doi = "10.3390/pr8030258",

language = "English",

volume = "8",

journal = "Processes",

issn = "2227-9717",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

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TY - JOUR

T1 - 3D Magneto-buoyancy-thermocapillary convection of CNT-water nanofluid in the presence of a magnetic field

AU - Kolsi, Lioua

AU - Algarni, Salem

AU - Mohammed, Hussein A.

AU - Hassen, Walid

AU - Lajnef, Emtinene

AU - Aich, Walid

AU - Almeshaal, Mohammed A.

PY - 2020/3/1

Y1 - 2020/3/1

N2 - Anumerical study is performed to investigate the effects of adding Carbon Nano Tube (CNT) and applying a magnetic field in two directions (vertical and horizontal) on the 3D-thermo-capillary natural convection. The cavity is differentially heated with a free upper surface. Governing equations are solved using the finite volume method. Results are presented in term of flow structure, temperature field and rate of heat transfer. In fact, results revealed that the flow structure and heat transfer rate are considerably affected by the magnitude and the direction of the magnetic field, the presence of thermocapillary forces and by increasing nanoparticles volume fraction. In opposition, the increase of the magnetic field magnitude leads to the control the flow causing flow stabilization by merging vortexes and reducing heat transfer rate.

AB - Anumerical study is performed to investigate the effects of adding Carbon Nano Tube (CNT) and applying a magnetic field in two directions (vertical and horizontal) on the 3D-thermo-capillary natural convection. The cavity is differentially heated with a free upper surface. Governing equations are solved using the finite volume method. Results are presented in term of flow structure, temperature field and rate of heat transfer. In fact, results revealed that the flow structure and heat transfer rate are considerably affected by the magnitude and the direction of the magnetic field, the presence of thermocapillary forces and by increasing nanoparticles volume fraction. In opposition, the increase of the magnetic field magnitude leads to the control the flow causing flow stabilization by merging vortexes and reducing heat transfer rate.

KW - Buoyancy thermocapillary convection

KW - CNT-water nanofluid

KW - Flow control

KW - Magnetic field direction

KW - Marangoni number

UR - https://www.scopus.com/pages/publications/85081981441

U2 - 10.3390/pr8030258

DO - 10.3390/pr8030258

M3 - Article

AN - SCOPUS:85081981441

SN - 2227-9717

VL - 8

JO - Processes

JF - Processes

IS - 3

M1 - 258

ER -

3D Magneto-buoyancy-thermocapillary convection of CNT-water nanofluid in the presence of a magnetic field

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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