CFD and Experimental Analysis of Diesel Particulate Filter
Ladda ner
Typ
Examensarbete för masterexamen
Master Thesis
Master Thesis
Program
Publicerad
2012
Författare
Samei, Elnaz
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
The diesel particulate filter (DPF) is a device designed to remove diesel particulate matter or soot from the exhaust gas of a diesel engine. The DPF is often used in combination with other exhaust after treatment devises, such as DOC (diesel oxidation catalyst) or SCR (selective catalyst reduction) in order to clean the exhaust gases before emission to the atmosphere. A DPF system based on sintered metal sheets has been developed in a previous research project at Volvo GTT. A series of tests have been performed on a down scaled DPF prototype. This prototype had high filtration efficiency. Then the next step is to study the soot and ash handling capacity of DPF system and perform tests on a full-scale prototype. In order to move forward to the next step the functionality of the filter should be investigated. Moreover, a complete model of flow inside the filter can help parameter investigation on both downscale and full-scale prototype. This master thesis aims to study the design and functionality and pressure drop prediction of the DPF in terms of soot accumulation by simulation of flow pattern inside the filter using a CFD tool. Building up a CFD model using StarCCM+ which is capable to simulate the flow through all channels and porous media of the filter plates and tuning the pressure drop parameters for all steps of filtration from clean filter to dirty one are the main achievements of this project. CFD results have been tuned by using experimental data of filtration tests.
Beskrivning
Ämne/nyckelord
Energi , Transport , Strömningsmekanik och akustik , Energy , Transport , Fluid Mechanics and Acoustics