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Primerjava modeliranega in izmerjenega aerodinamičnega hrupa za analizo hrupa centrifugalnega puhala : magistrsko delo magistrskega študijskega programa II. stopnje StrojništvoBajt, Jure, strojnikNajprej smo ugotovili, da je zniževanju širokopasovnega hrupa v sesalnih enotah smiselno namenjati pozornost, saj njegov doprinos k skupnemu hrupu ni zanemarljiv. Za tem smo se lotili iskanja ... parametra numeričnih simulacij, ki je povezan s širokopasovnim hrupom. Tega smo se lotili z izvedbo enostavnega eksperimenta z minimalnimi vplivnimi okoliškimi dejavniki. Preko valja smo pod različnimi pogoji natekali zrak. Eksperiment smo še numerično poustvarili, ob tem pa iskali izstopne spremenljivke simulacije, katerih trend in celo absolutna vrednost ustrezata trendom hrupa pri eksperimentu. V delu smo torej ugotovili, kateri izmed izhodnih parametrov v numeričnih simulacijah je povezan s širokopasovnim hrupom. Te parametre smo primerjali še s hrupom na realnem problemu generacije širokopasovnega hrupa na gonilnikih sesalnih enot. Za ta namen smo pomerili hrup sesalnih enot v gluhi sobi in amplitudno frekvenčnemu spektru odstranili izrazite vrhove. S pomočjo analize obeh eksperimentov, ki sta bila podkrepljena z numeričnimi simulacijami smo ugotovili, da sta izstopna parametra, ki sta najbolj povezana s hrupom: volumski integral turbulentne kinetične energije in logaritem volumskega integrala akustične zvočne moči.Type of material - master's thesis ; adult, seriousPublication and manufacture - Ljubljana : [J. Bajt], 2022Language - slovenianCOBISS.SI-ID - 103112195
Author
Bajt, Jure, strojnik
Other authors
Prezelj, Jurij, strojnik |
Markič, Igor
Topics
magistrske naloge |
simulacija zračnih tokov |
širokopasovni hrup |
akustika strojev |
sesalna enota |
master thesis |
simulations of air flow |
broadband noise |
machine acustics
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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Year | Impact factor | Edition | Category | Classification | ||||
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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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Bajt, Jure, strojnik | |
Prezelj, Jurij, strojnik | 20857 |
Markič, Igor | 29277 |
Source: Personal bibliographies
and: SICRIS
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