20.500.12556/DKUM-42810 Primerjava fizikalnih modelov Adblue tekočine pri SCR sistemih ter vpliv mrež različnih gostot The comparison of Adblue physical models in SCR systems and the influence of different mesh densities Diplomska naloga predstavlja primerjavo fizikalnih modelov Adblue tekočine pri SCR sistemih. AdBlue tekočina je enkrat obravnavana kot več-komponentna zmes (vodna raztopina uree – UWS), drugič kot eno-komponentna zmes (voda), primerjava pa je pokazala vpliv izbire modela na rezultate CFD simulacije. Izvedena je bila tudi primerjava računskih mrež različnih gostot in s tem predstavljen vpliv velikosti celice računske mreže na rezultate. Simulacije in analize so bile narejene s programskim paketom AVL FIRE v2011.1. Analiza rezultatov simulacij vpliva izbire modela Adblue tekočine je pokazala, da je pri simulacijah SCR sistemov pravilneje uporabiti model, ki jo definira kot več-komponentno zmes (UWS). Analiza rezultatov simulacij z računskimi mrežami različnih velikosti celice pa je pokazala vpliv izbire velikosti celice na natančnost rezultatov. Diploma thesis presents comparison of the AdBlue physical models in SCR systems. The Adblue is handled in one case as multi-component (UWS- Urea water solution) and in another case as single-component fluid (water). Comparison of these two models showed influence of model choice on simulation results. Also, comparison of different mesh densities was performed and by that influence of computational mesh cell size on results was shown. All simulations and post-processing (result analysis) were performed by AVL FIRE v2011.1 CFD code. Analysis of different physical models simulations results showed that for SCR systems simulation the multi-component approach is recommended (UWS - Urea water solution). Analysis of simulations with different computational meshes that have different cell sizes showed influence of cell size choice on accuracy of simulation results. AdBlue SCR sistemi urea redukcija NOx metoda končnih volumnov računalniška dinamika tekočin AdBlue SCR systems urea NOx reduction finite volume method computer fluid dynamics true true false [T. Milošič] Slovenski jezik Angleški jezik Diplomsko delo 2013-10-20 00:41:39 2013-11-11 11:07:55 2022-05-08 03:06:03 2021-04-27 03:20:34 2013 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 004.942:532.5(043.2) 17595926 URN:SI:UM:DK:QIXXNBAM UNI_Milosic_Teo_2013.pdf UNI_Milosic_Teo_2013.pdf 1 344CCDC298FE22E9356A1578640D529C 9f0236c29cbb87afdd407adec196a6f9cc52e0de531869b5036e9057545ced46 84b269cf-7c0a-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=60420 Fakulteta za strojništvo 0 0 0