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Vpliv degradacije SIS strukture na prenos toplote pri pretoku vodnih raztopin surfaktantov : magistrsko deloDugonik, MarjetaV magistrskem delu je raziskana možnost uporabe aditivov v praksi ter opisane kemijske in reološke značilnosti raztopin polimernih aditivov in kationskih surfaktantov pri pretoku skozi cevi v ... laminarnem in turbulentnem področju. Prav tako je analiziran vpliv aditivov na zmanjšanje trenja in prenosa toplote. V raziskavi so podani rezultati preračunov koeficienta trenja, Reynolds-ovega števila pri različnih pretokih in premerih cevi, padca tlaka nameter cevi, ter stopnje zmanjšanja trenja, ki se navezujejo na vodo in vodno raztopino surfaktanta. Za različne tipe prenosnikov toplote je analiziran vpliv spremembe koeficienta trenja na prenos toplote. Ugotovljeno je, da pri pretoku raztopine površinsko aktivnih aditivov oziroma surfaktantov v ceveh le ti v območju velikih strižnih sil tvorijo paličaste micele, ki se medsebojno povezujejo v medmolekulsko SIS strukturo, ki absorbira energijo turbulence in s tem vpliva na zmanjšanje trenja in prenos toplote. Rezultati teoretičnih izračunov se dobro ujemajo z raziskavami in eksperimenti avtorjev, ki so navedeni v literaturi magistrskega dela.Type of material - master's thesis ; adult, seriousPublication and manufacture - Maribor : [M. Dugonik], 2009Language - slovenianCOBISS.SI-ID - 13718294
Author
Dugonik, Marjeta
Other authors
Goričanec, Darko |
Krope, Jurij
Topics
surfaktanti |
dinamika fluidov |
koeficient trenja |
zmanjšanje trenja |
strižna napetost |
prenos toplote |
surfactants |
fluid dymanic |
drag coefficient |
drag reduction |
shear stress |
heat transfer
Library | Call number – location, accession no. ... | Copy status |
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Library of Technical Faculties, Maribor | pisarna A-003 (FERI) MD DUGONIK M. Vpliv | available - reading room |
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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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Dugonik, Marjeta | |
Goričanec, Darko | 06003 |
Krope, Jurij | 03022 |
Source: Personal bibliographies
and: SICRIS
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