20.500.12556/DKUM-61975 Določitev parametrov modela razprševanja in analiza tokovnih razmer v pretvorniku s selektivno katalitično redukcijo Spray parameter determination and flow analysis in a selective catalyst reduction converter Pred samim procesom simuliranja razmer v pretvorniku s selektivno katalitično redukcijo je bilo potrebno pridobiti podatke iz meritev, ki so bile narejene z PDA merilnim sistemom. Meritve v magistrski nalogi niso bile izvedene temveč so bili pridobljeni samo rezultati. Pridobljene meritve so bile nato uporabljene za določevanje parametrov razprševanja v programskem paketu AVL FIRE. Cilj določevanja parametrov je bil ta, da se zagotovi prileganje rezultatov simulacije na pridobljene meritve. Po uspešni določitvi parametrov sta bili narejeni dve CFD simulaciji. Prva je v geometriji vsebovala mešalo, ki skrbi za enakomerno porazdelitev NH3 pred vstopom v katalizator. V drugi simulaciji pa je bilo mešalo odstranjeno. Medsebojna primerjava rezultatov obeh simulacij je pokazala, da prinese mešalo v SCR sistem veliko več prednosti kot slabosti. Before CFD simulation of SCR could be setup data from measurements had to be obtained. Measurements were performed by colleges with PDA measuring technique and are not part of this masters theses. However PDA system is described. Measurements results were then used to determine spray parameters in CFD simulation which was made in AVL FIRE. With spray parameters set up in a way that simulation results fit to measurement data two simulations were made. First simulation contained mixer before catalyst which provides sufficient NH3 uniformity. In second simulation mixer was removed and results were compared. Final conclusion was that the benefits of mixer outweigh its flaws in SCR system. CFD simulacija določitev parametrov razprševanja selektivna katalitična redukcija analiza tokovnih razmer mešalo CFD simulation spray parameter determination selective catalytic reduction flow analysis mixer true true false [M. Mlakar] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2016-08-20 08:51:17 2016-10-07 11:25:42 2022-06-28 03:07:11 2019-07-11 12:39:25 2016 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 004.94:532.525(043.2) 20413718 URN:SI:UM:DK:OJRGJ6EN MAG_Mlakar_Matija_2016.pdf MAG_Mlakar_Matija_2016.pdf 1 AB3F64E0861B4AE6F6FEB9DB4325BEE9 932b8521f807cc6731014097f5286423e1c557b1267ed96612f75f0af9caa3e5 c55f15d8-7c0d-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=107460 Fakulteta za strojništvo 0 0 0