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Title:KLASIČEN COUETTOV TOK Z VISKOZNO DISIPACIJO IN SPREMENLJIVIMI LASTNOSTMI TEKOČINE
Authors:Kocutar, Primož (Author)
Škerget, Leopold (Mentor) More about this mentor... New window
Ravnik, Jure (Co-mentor)
Files:.pdf UNI_Kocutar_Primoz_2010.pdf (594,71 KB)
 
Language:Slovenian
Work type:Undergraduate thesis (m5)
Organization:FS - Faculty of Mechanical Engineering
Abstract:V diplomskem delu se posvečamo vplivu spremenjivih snovnih lastnosti tekočine na klasičen dvo-dimenzionalen Couettov tok z viskozno disipacijo. Uporabljena je bila numerična shema, ki deluje na podlagi metode robnih elementov. Profila temperaturnega in hitrostnega polja sta predstavljena za tok tekočine, pri katerem imata zgornja in spodnja plošča temperaturo 273K v primerjavi z analitično rešitvijo, katera je obravnavana s konstantnimi snovnimi lastnostmi, ter z rezultati drugih avtorjev za tok tekočine s spremenljivimi lastnostmi. Ugotovili smo da ima nekonstantnost snovnih lastnosti znaten vpliv na rezultate temperaturnega in hitrostnega profila. Hitrostni profil namesto premice, ki nastopi pri simulaciji z konstantnimi snovnimi lastnostmi zavzame obliko S. Iz temperaturnega profila je razvidno, da se tekočina segreje na znatno nižjo temperaturo, kot pri preračunu s konstantnimi lastnostmi tekočine.
Keywords:Couettov tok, spremenljive lastnosti tekočine, viskozna disipacija, disipacija toplote, metoda robnih elementov, računalniška dinamika tekočin
Year of publishing:2010
Publisher:[P. Kocutar]
Source:Maribor
UDC:532.5:519.61/.64(043.2)
COBISS_ID:14622486 Link is opened in a new window
NUK URN:URN:SI:UM:DK:PDNIIQF0
Views:2113
Downloads:226
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:KTFMB - FS
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Secondary language

Language:English
Title:CLASSICAL COUETTE FLOW WITH VISCOUS DISSIPATION AND VARIABLE FLUID PROPERTIES
Abstract:This diploma thesis focuses on the effect of variable fluid properties on the classical two-dimensional Couette flow with viscous dissipation. We used numerical scheme, based on the boundary element method. Velocity and temperature profiles are presented for fluid flow, for equal plate temperatures, 273K, in comparison with analytical solution that is valid for constant properties and results presented by other authors for fluid with variable properties. It is found that variable fluid properties plays an important role in the results for velocity and temperature profiles. Velocity profile istead of straight line, which appears for constant properties has S form. From temperature profile is shown, that fluid is heated on significantly lower temperature than the fluid with constant properties.
Keywords:Couette flow, variable fluid properties, viscous dissipation, heat dissipation, boundary element method, computational fluid dynamics


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