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Istraživanja magnetno hidrodinamičkih strujanja i prenosa toplote mikropolarnih fluida

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2019
Disertacija.pdf (18.94Mb)
Kocic_Milos.pdf (7.711Mb)
Author
Kocić, Miloš
Mentor
Stamenković, Živojin
Committee members
Savić, Slobodan
Jovanović, Miloš
Bogdanović-Jovanović, Jasmina
Spasić, Živan
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Abstract
The basis of the doctoral thesis is the analysis of flow and heat transfer of one or two electrically conducting micropolar fluids in the presence of magnetic and electric fields. The first part of the dissertation is the development of mathematical models for described problems of MHD flow and heat transfer of micropolar fluid, where the research is conducted in inductionless approximation and for the case of coupled equations. After that, in the next chapters, the problem of walls conductivity of the channel is considered, also the effects of induced magnetic field and interface boundary conditions for the flow of two fluids. Special attention is paid to the flow of two fluids between inclined plates where one fluid is micropolar and the other one is Newtonian. Analytical solutions are given for momentum, microrotation, energy and magnetic induction equations for the problems of MHD flow of one and two fluids. Next part of the dissertation has a detailed analysis of phys...ical phenomena that occur in MHD and EMHD flow of micropolar fluids, and comparison of analytical solutions obtained in closed form with the results obtained by numerical simulations. Using the numerical simulations the case of the flow of micropolar fluid in the horizontal and vertical channels under the influence of magnetic and electric fields are solved. At the end, within the dissertation detailed analysis of results are given for micropolar fluids, which is significant in the technical practices, for different values characteristic dimensionless numbers that describes MHD and EMHD problems of flow and heat transfer of micropolar fluids. Special attention is also given to the applicability of the research in the development of new technologies.

Faculty:
Универзитет у Нишу, Машински факултет
Date:
07-06-2019
Projects:
  • The revitalization of existing and designing of new micro and mini hydro power plants (from 100 up to 1000 kW) on the territory of south and southeastern Serbia (RS-33040)
  • Research of MHD flows around the bodies, in the tip clearances and the channels and application in the MHD pumps development (RS-35016)
  • Unapređenje konstruktivnih rešenja sporohodih radnih kola centrifugalnih pumpi u cilju proširenja oblasti rada i poboljšanja kavitacionih karakteristika (RS-14032)
Keywords:
mikropolarni fluidi / micropolar fluids / MHD / EMHD / fluid flow / heat transfer / CFD / ANSYS / MHD / EMHD / strujanje fluida / prenos toplote / CFD / ANSYS
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_nardus_11685
URI
http://eteze.ni.ac.rs/application/showtheses?thesesId=7012
https://nardus.mpn.gov.rs/handle/123456789/11685
https://fedorani.ni.ac.rs/fedora/get/o:1601/bdef:Content/get
http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70052&RID=534122646

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