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[{"key": "dc.contributor.advisor", "value": "Merikoski, Juha", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Maunuksela, Jussi", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Ik\u00e4heimonen, Otto", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2019-08-09T05:33:32Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2019-08-09T05:33:32Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2019", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/65211", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4ss\u00e4 ty\u00f6ss\u00e4 jatkettiin aikaisemmin Jyv\u00e4skyl\u00e4n yliopistossa tehty\u00e4 kansainv\u00e4list\u00e4kin tunnustusta saanutta tutkimusta hitaasti paperissa etenev\u00e4n 1+1-ulotteisen palorintaman dynamiikasta ja sen yhteydest\u00e4 KPZ-universaalisuusluokkaan. Poiketen aikaisemmista tutkimuksista ty\u00f6ss\u00e4 on tutkittu aikaisempaa pidempi\u00e4 polttoja, joiden avulla on parannettu palorintaman stationaarisen alueen statistiikkaa, ja yleisesti v\u00e4h\u00e4lle huomiolle j\u00e4\u00e4neit\u00e4 rajapintojen reunailmi\u00f6it\u00e4. Molemmissa tapauksissa tutkittuina suureina ovat korrelaatiofunktiosta saadut skaalauseksponentit (kasvu- ja karheuseksponentti) sek\u00e4 korkeusfluktuuaatiojakauma ja sit\u00e4 kuvaavat tunnusluvut vinous ja huipukkuus. Ty\u00f6ss\u00e4 k\u00e4ytiin l\u00e4pi etenevien rajapintojen perusteoriaa eli Family--Vicsek-skaalauslaki, EW-yht\u00e4l\u00f6 sek\u00e4 yksinkertaisin etenevi\u00e4 rajapintoja kuvaava KPZ-yht\u00e4l\u00f6. My\u00f6s kokeellinen laitteisto ja polttokoedatan analysointiin k\u00e4ytetyt algoritmit k\u00e4ytiin l\u00e4pi.\n\nKoko poltoille tarkastellut korrelaatiofunktiot ja korkeusfluktuaatiojakauma osoittivat, ett\u00e4 tarkasteltu paperinpolttodata ei vastaa KPZ-yht\u00e4l\u00f6n ennustetta kasvueksponenttia lukuunottamatta. Kasvueksponentin k\u00e4ytt\u00e4ytyminen ja aikaisemmin tehdyt tutkimukset kuitenkin viittaavat siihen, ett\u00e4 karheuseksponentin ja korkeusfluktuaatiojakaumien huono k\u00e4ytt\u00e4ytyminen johtuvat statistiikan puutteesta. \n\nReunailmi\u00f6it\u00e4 tarkasteltiin kahdelle eri leveyksiselle reunalle ja niiden tarkastelussa suurin huomio kiinnittyy korkeusfluktuaatiojakaumien k\u00e4ytt\u00e4ytymiseen, sill\u00e4 paperin vastakkaisten reunojen korkeusfluktuaatiojakaumien k\u00e4ytt\u00e4ytyminen oli hyvin samankaltaista koko poltoille saadun korkeusfluktuaatiojakauman kanssa vaikka reunojen ja koko polttojen korrelaatifunktioiden v\u00e4lill\u00e4 oli merkitt\u00e4v\u00e4 ero. T\u00e4m\u00e4 yll\u00e4tt\u00e4v\u00e4 havainto tarjoaa motivaation reunailmi\u00f6iden jatkotutkimukselle.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "In this thesis the work with the dynamics of the propagating 1+1-dimensional slow combustion fronts and it's connection to KPZ universality class, which has been done previously in University of Jyv\u00e4skyl\u00e4, were continued. The studies in this thesis differ from previous studies with longer measurements of the combustion front which helped to get more statistics from the stationary part of the dynamics, and the studies with widely ignored edge phenomena of the interfaces. In both cases scaling exponents (growth and roughness exponent), which are obtained from the correlation function, and the height fluctuation distribution and it's skewness and kurtosis were studied. In the thesis the basic theory of the propagating interfaces were explained, i.e. Family-Vicsek scaling law, EW equation and KPZ equation, which is the simplest equation to describe propagation of the interface, were gone trough. The experimental set-up and algorithms used to analyse the data were described.\n\nThe results for the bulk of the combustion fronts where correlation function and height fluctuation distribution were studied are that growth exponent is the only characteristics which match with the KPZ equation's prediction. The behaviour of the growth exponent and the previous studies still implies that the behaviour of the roughness exponent and the height fluctuation distribution can be explained with lack of statistics.\n\nEdge phenomena were studied with two different sizes of edges and the unexpected result was that the behaviour of the height fluctuation distribution at the edges were really close to the behaviour of the height fluctuation distribution in the bulk. This behaviour was there although the behaviour of the correlation functions differed significantly when edges and bulk were compared. This surprising observation generates the motivation for the future studies of edge phenomena of the propagating interfaces.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2019-08-09T05:33:32Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2019-08-09T05:33:32Z (GMT). No. of bitstreams: 0\n Previous issue date: 2019", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "37", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "etenev\u00e4 palorintama", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "reunailmi\u00f6t", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Family-Vicsek skaalauslaki", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "Edwards-Wilkinson-yht\u00e4l\u00f6", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "KPZ-yht\u00e4l\u00f6", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Etenev\u00e4n palorintaman dynamiikka", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-201908093797", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Fysiikan laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Physics", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Teoreettinen fysiikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Theoretical Physics", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4024", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "palaminen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "paperi", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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