Applying Soot Phi-T Maps for Engineering CFD Applications in Diesel Engines

2005-01-3856

10/24/2005

Event
Powertrain & Fluid Systems Conference & Exhibition
Authors Abstract
Content
Soot modeling has become increasingly important as diesel engine manufacturers are faced with constantly tightening soot emission limits. As such the accuracy of the soot models used is more and more important but at the same time 3-D CFD engine studies require models that are computationally not too demanding. In this study, soot Phi-T maps created with detailed chemistry code have been used to develop a soot model for engineering purposes. The proposed soot model was first validated against detailed chemistry results in premixed laminar environment. As turbulence in engines is of major importance, it was taken into account in the soot oxidation part of the model with the laminar and turbulent characteristic time- type of approach. Finally, the model was tested in a large bore Diesel engine with varying loads. Within the steps described above, the proposed model was also compared with the well-known Hiroyasu-Magnussen soot model. It was found out that the proposed soot model gives qualitatively good results in premixed and laminar conditions as opposed to the Hiroyasu-Magnussen model. In addition, the new soot model gave better results in engine conditions.
Meta TagsDetails
DOI
https://doi.org/10.4271/2005-01-3856
Pages
15
Citation
Kaario, O., Antila, E., and Larmi, M., "Applying Soot Phi-T Maps for Engineering CFD Applications in Diesel Engines," SAE Technical Paper 2005-01-3856, 2005, https://doi.org/10.4271/2005-01-3856.
Additional Details
Publisher
Published
Oct 24, 2005
Product Code
2005-01-3856
Content Type
Technical Paper
Language
English