20.500.12556/DKUM-15329 KLASIČEN COUETTOV TOK Z VISKOZNO DISIPACIJO IN SPREMENLJIVIMI LASTNOSTMI TEKOČINE CLASSICAL COUETTE FLOW WITH VISCOUS DISSIPATION AND VARIABLE FLUID PROPERTIES 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. 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. Couettov tok spremenljive lastnosti tekočine viskozna disipacija disipacija toplote metoda robnih elementov računalniška dinamika tekočin Couette flow variable fluid properties viscous dissipation heat dissipation boundary element method computational fluid dynamics true true false [P. Kocutar] Slovenski jezik Angleški jezik Diplomsko delo 2010-09-03 13:09:47 2010-09-08 14:08:44 2022-04-12 22:45:34 2023-12-19 03:11:50 2010 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 532.5:519.61/.64(043.2) 14622486 URN:SI:UM:DK:PDNIIQF0 UNI_Kocutar_Primoz_2010.pdf UNI_Kocutar_Primoz_2010.pdf 1 BBDD8EDCC80D091A1598DC47EF36609B 3b2ac7db41a87ac6b3bfb83d605a44191aafd4cedc75414baf0ab61f8e3ddf43 5f9554d6-7c04-11eb-bb7a-00155d0001ca 20.500.12556/dkum/b7b4aae9-e51b-44be-9345-a4115dffecaf https://dk.um.si/Dokument.php?lang=slv&id=16805 Fakulteta za strojništvo 0 0 0