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Primerjava različnih turbulentnih modelov zgorevanja na primeru pilotne sežigalnice : doktorska disertacijaKokalj, FilipUporabo računalniškega modeliranja danes narekujejo hitre in uspešne raziskave in razvoj novih tehnologij. Modeliranje je moč uporabiti za razvoj novih ali nadgradnjo obstoječih naprav. Sodobni ... programski paketi računske dinamike tekočin reaktivnega toka omogočajo tudi relativno zanesljivo in natančno modeliranje procesov zgorevanja. Smer in hitrost gibanja tekočine, temperature, sestavo ali čase zadrževanja lahko izračunamo in napovemo z različnimi makroskopskimi modeli. Vendar pa samo z računalniško dinamiko tekočin dobimo neposreden in relativno natančen vpogled v procese po celotni zgorevalni komori. Tako lahko raziskovalci izpostavimo in rešimo potencialni problem, še preden pričnemo s praktično izvedbo projekta. V okviru naše primerjave različnih računskih modelov zgorevanja smo se odločili, da bomo preverili kvaliteto modelov zgorevanja, ki so nam na voljo v programskih paketih CFX 4, CFX 5 in CFX 10, v smislu točnega izračuna razmer v pilotni sežigalni napravi, ki je v lasti podjetja KIV iz Vranskega in Inštituta za energetsko, procesno in okoljsko inženirstvo Fakultete za strojništvo v Mariboru. Teoretično smo preučili in praktično preizkusili vse modele zgorevanja. Preverili smo standardne vrednosti konstant in preizkusili nekatere modifikacije empirijskih konstant. Pokazali smo prednosti in slabosti eno in večkoračnih modelov. Izračunali in komentirali smo čase zadrževanje v termoreaktorju in prikazali optimiranje ter določitev mej okoljsko sprejemljivega obratovanja termoreaktorja. Prikazali smo tudi izračun tvorbe dušikovih oksidov in izpostavili s tem povezano pomanjkljivost programskega paketa.Type of material - dissertation ; adult, seriousPublication and manufacture - Maribor : [F. Kokalj], 2006Language - slovenianCOBISS.SI-ID - 225354752
Author
Kokalj, Filip
Other authors
Škerget, Leopold |
Samec, Niko
Topics
modeli zgorevanja |
sežigalnice |
dinamika tekočin |
večsestavinski reaktivni tok |
procesi zgorevanja |
računska simulacija
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National and University Library, Ljubljana | GS II 617795 glavno skladišče | 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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Kokalj, Filip | 21377 |
Škerget, Leopold | 06428 |
Samec, Niko | 13470 |
Source: Personal bibliographies
and: SICRIS
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