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Title:KLASIČEN COUETTOV TOK Z VISKOZNO DISIPACIJO IN SPREMENLJIVIMI LASTNOSTMI TEKOČINE
Authors:ID Kocutar, Primož (Author)
ID Škerget, Leopold (Mentor) More about this mentor... New window
ID Ravnik, Jure (Comentor)
Files:.pdf UNI_Kocutar_Primoz_2010.pdf (594,71 KB)
MD5: BBDD8EDCC80D091A1598DC47EF36609B
PID: 20.500.12556/dkum/b7b4aae9-e51b-44be-9345-a4115dffecaf
 
Language:Slovenian
Work type:Undergraduate thesis
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
Place of publishing:Maribor
Publisher:[P. Kocutar]
Year of publishing:2010
PID:20.500.12556/DKUM-15329 New window
UDC:532.5:519.61/.64(043.2)
COBISS.SI-ID:14622486 New window
NUK URN:URN:SI:UM:DK:PDNIIQF0
Publication date in DKUM:08.09.2010
Views:3381
Downloads:330
Metadata:XML 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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