Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/10569
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dc.date.accessioned2013-08-19T09:50:13Z-
dc.date.available2013-08-19T09:50:13Z-
dc.date.issued2013-08-19-
dc.identifier.urihttp://hdl.handle.net/10603/10569-
dc.description.abstractMagnetoconvection in cavities received a great deal of attention because of its multi-faceted applications in geo-physics, astro-physics, bio-medical problems, in the study of structure of stars and planets, magneto hydrodynamic generators, space science, nuclear reactors etc. In this thesis, unsteady natural convection in square enclosres with differentially thermally active vertical walls in the presence of a uniform magnetic field is studied numerically. This research focuses on the flow variables such as stream lines, isotherms and heat transfer coefficient for various values of the parameters under the effect of magnetic field. The objectives of the present research work are to study the effect of Grashof number, Hartmann number on the heat transfer coefficient, namely the average Nusselt number. In order to check the accuracy of the present numerical code developed in Digital Fortran, the values obtained are compared with available literature and are found to be in good agreement. The detailed flow structure and the associated flow characteristics inside the cavity are presented in the form of isotherms, streamlines and velocity profiles. The fluid motion inside the cavity comprises of either single or multiple counter rotating cells. The flow characteristics inside the cavity, dominated by the buoyancy flow, are completely dampened by the influence of magnetic field. The average Nusselt number is found to increase with increase in Grashof number and decrease with increase in Hartmann number. When the magnetic field is strong, the velocities are suppressed and the convective heat transfer rate is reduced. The average Nusselt number behaves in a non-linear fashion with increase in angle of inclination. Thus, the overall heat transfer rate in the cavity can be significantly reduced by applying a magnetic field parallel to gravity with appropriate choice of the boundary conditions. newlineen_US
dc.format.extentxv, 212en_US
dc.languageEnglishen_US
dc.relation162en_US
dc.rightsuniversityen_US
dc.titleNumerical analysis of magnetoconvection in square enclosures with differentially thermally active vertical wallsen_US
dc.creator.researcherGokila, Sen_US
dc.subject.keywordMagnetoconvection, cavities, geo-physics, astro-physics, biomedical, streamlines, isotherms, heat transfer, Grashof number, Hartmann number, Nusselt numberen_US
dc.description.noteNoneen_US
dc.contributor.guideSelladurai, Ven_US
dc.publisher.placeChennaien_US
dc.publisher.universityAnna Universityen_US
dc.publisher.institutionFaculty of Science and Humanitiesen_US
dc.date.registeredn.d.en_US
dc.date.completed2011en_US
dc.date.awardedn.d.en_US
dc.format.dimensions23.5 cm x 15 cmen_US
dc.format.accompanyingmaterialNoneen_US
dc.source.universityUniversityen_US
dc.type.degreePh.D.en_US
Appears in Departments:Faculty of Science and Humanities

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01_title.pdfAttached File54.26 kBAdobe PDFView/Open
02_certificates.pdf862.49 kBAdobe PDFView/Open
03_abstract.pdf58.8 kBAdobe PDFView/Open
04_acknowledgement.pdf56.39 kBAdobe PDFView/Open
05_contents.pdf127.69 kBAdobe PDFView/Open
06_chapter 1.pdf56.14 kBAdobe PDFView/Open
07_chapter 2.pdf109 kBAdobe PDFView/Open
08_chapter 3.pdf379.45 kBAdobe PDFView/Open
09_chapter 4.pdf1.67 MBAdobe PDFView/Open
10_chapter 5.pdf1.64 MBAdobe PDFView/Open
11_chapter 6.pdf1.25 MBAdobe PDFView/Open
12_chapter 7.pdf1.05 MBAdobe PDFView/Open
13_chapter 8.pdf33.72 kBAdobe PDFView/Open
14_references.pdf224.93 kBAdobe PDFView/Open
15_publications.pdf36.45 kBAdobe PDFView/Open
16_vitae.pdf12.69 kBAdobe PDFView/Open


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