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Title:Primerjava fizikalnih modelov Adblue tekočine pri SCR sistemih ter vpliv mrež različnih gostot
Authors:Milošič, Teo (Author)
Škerget, Leopold (Mentor) More about this mentor... New window
Ravnik, Jure (Co-mentor)
Files:.pdf UNI_Milosic_Teo_2013.pdf (3,72 MB)
 
Language:Slovenian
Work type:Undergraduate thesis (m5)
Typology:2.11 - Undergraduate Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract: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.
Keywords:AdBlue, SCR sistemi, urea, redukcija NOx, metoda končnih volumnov, računalniška dinamika tekočin
Year of publishing:2013
Publisher:[T. Milošič]
Source:Maribor
UDC:004.942:532.5(043.2)
COBISS_ID:17595926 Link is opened in a new window
NUK URN:URN:SI:UM:DK:QIXXNBAM
Views:1301
Downloads:187
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:KTFMB - FS
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Secondary language

Language:English
Title:The comparison of Adblue physical models in SCR systems and the influence of different mesh densities
Abstract: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.
Keywords:AdBlue, SCR systems, urea, NOx reduction, finite volume method, computer fluid dynamics


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