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Določitev koeficienta dinamične viskoznosti s statistično mehaniko : zaključna naloga univerzitetnega študijskega programa I. stopnje StrojništvoIstenič, EnejZaključna naloga razlaga viskoznost fluida kot posledico prenosa gibalne količine molekul znotraj laminarnega toka fluida, za katerega predpostavimo, da se nahaja v stanju redkega plina. Na podlagi ... formalizma statistične mehanike izpeljemo funkcije porazdelitve gostote verjetnosti, ki opisujejo lastnosti delcev, ki določajo prenos gibalne količine in obravnavamo tudi vpliv medmolekularnih sil na prenos gibalne količine molekul. Iz enačbe za prenos gibalne količine molekul na mikroskopski skali izpeljemo model, ki opisuje viskozne strižne sile v fluidu in posledično enačbo, ki določa razmerje med koeficientom dinamične viskoznosti in spremenljivkami stanja v fluidu. Napovedi teoretičnega modela smo primerjali z eksperimentalno dobljenimi rezultati in ugotovili, da v določenem območju pogojev dosežemo zadovoljivo ujemanje, če v model uvedemo brezdimenzijski faktor, ki upošteva zapletenejše oblike interakcij med molekulami, ki jih je analitično zahtevno popisati. Brezdimenzijski faktor določimo na podlagi primerjave teoretičnih napovedi in eksperimentalnih podatkov.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [E. Istenič], 2016Language - slovenianCOBISS.SI-ID - 14819099
Author
Istenič, Enej
Other authors
Šajn, Viktor
Topics
diplomske naloge |
viskoznost |
redek plin |
laminarni tok |
medmolekulska sila |
povprečna prosta pot |
funkcija porazdelitve gostote verjetnosti |
viscosity |
rarefied gas |
laminar flow |
intermolecular force |
mean free path |
probability density function
Library/institution |
City | Acronym | For loan | Other holdings |
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Faculty of Mechanical Engineering, Ljubljana | Ljubljana | FSLJ |
reading room 1 cop.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Istenič, Enej | 54895 |
Šajn, Viktor | 13088 |
Source: Personal bibliographies
and: SICRIS
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