Unstable thin film spreading of volatile binary mixtures

This Thesis discusses the fluid mechanics of thin films, with emphasis on dynamical instabilities observed in some situations. The theoretical part first presents the main theory of thin-film flow, and then advances to discuss the problems associated with incorporation of evaporative effects and bin...

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Main Author: Isojärvi, Teemu
Other Authors: Matemaattis-luonnontieteellinen tiedekunta, Faculty of Sciences, Fysiikan laitos, Department of Physics, University of Jyväskylä, Jyväskylän yliopisto
Format: Master's thesis
Language:eng
Published: 2013
Subjects:
Online Access: https://jyx.jyu.fi/handle/123456789/42570
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author Isojärvi, Teemu
author2 Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto
author_facet Isojärvi, Teemu Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto Isojärvi, Teemu Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto
author_sort Isojärvi, Teemu
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description This Thesis discusses the fluid mechanics of thin films, with emphasis on dynamical instabilities observed in some situations. The theoretical part first presents the main theory of thin-film flow, and then advances to discuss the problems associated with incorporation of evaporative effects and binary mixtures in the model. In the experimental part, measurements related to spreading of certain class of binary mixtures are presented. The studied mixtures have a volatile component with low surface tension and a less volatile component with high surface tension. The main example of such a mixture is the water-isopropanol system. Tämän opinnäytteen aiheena on ohuiden nestekalvojen virtausmekaniikka, ja erityisesti niiden joissain tilanteissa esiintyvä epästabiili käyttäytyminen. Teoreettisessa osassa esitellään ensin ohutkalvovirtausten perusteoria, ja sitten edetään käsittelemään ongelmia joita syntyy pyrittäessä mallintamaan haihtuvien tai useampikomponenttisten nesteiden käyttäytymistä. Kokeellisessa osiossa esitellään mittaustuloksia liittyen tietynlaisten kahden nesteen seosten leviämiseen kiinteällä pinnalla. Tutkituissa seoksissa on nopeasti haihtuva komponentti, jolla on pieni pintajännitys ja hitaasti haihtuva komponentti, jolla on suuri pintajännitys. Yksi esimerkki tällaisesta seoksesta on veden ja isopropyylialkoholin seos.
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The theoretical part first presents the main theory of thin-film flow, and then advances to discuss the problems associated with incorporation of evaporative effects and binary mixtures in the model. In the experimental part, measurements related to spreading of certain class of binary mixtures are presented. The studied mixtures have a volatile component with low surface tension and a less volatile component with high surface tension. The main example of such a mixture is the water-isopropanol system.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4m\u00e4n opinn\u00e4ytteen aiheena on ohuiden nestekalvojen virtausmekaniikka, ja erityisesti niiden joissain tilanteissa esiintyv\u00e4 ep\u00e4stabiili k\u00e4ytt\u00e4ytyminen. 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spellingShingle Isojärvi, Teemu Unstable thin film spreading of volatile binary mixtures ohuet nestekalvot virtausmekaniikka epälineaarinen dynamiikka Fysiikka Physics 4021
title Unstable thin film spreading of volatile binary mixtures
title_full Unstable thin film spreading of volatile binary mixtures
title_fullStr Unstable thin film spreading of volatile binary mixtures Unstable thin film spreading of volatile binary mixtures
title_full_unstemmed Unstable thin film spreading of volatile binary mixtures Unstable thin film spreading of volatile binary mixtures
title_short Unstable thin film spreading of volatile binary mixtures
title_sort unstable thin film spreading of volatile binary mixtures
title_txtP Unstable thin film spreading of volatile binary mixtures
topic ohuet nestekalvot virtausmekaniikka epälineaarinen dynamiikka Fysiikka Physics 4021
topic_facet 4021 Fysiikka Physics epälineaarinen dynamiikka ohuet nestekalvot virtausmekaniikka
url https://jyx.jyu.fi/handle/123456789/42570 http://www.urn.fi/URN:NBN:fi:jyu-201312022709
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