Applying Soot Phi-T Maps for Engineering CFD Applications in Diesel Engines Helsinki University of Technology

Format:

Conference/Event

Author/Creator:

Kaario, Ossi, author.

Conference Name:

Powertrain & Fluid Systems Conference & Exhibition (2005-10-24 : San Antonio, Texas, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2005

Summary:

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

Notes:

Vendor supplied data

Publisher Number:

2005-01-3856

Access Restriction:

Restricted for use by site license