1998-10-19

Modeling of Soot Formation During DI Diesel Combustion Using a Multi-Step Phenomenological Model 982463

Predictive models of soot formation during Diesel combustion are of great practical interest, particularly in light of newly proposed strict regulations on particulate emissions. A modified version of the phenomenological model of soot formation developed previously has been implemented in KIVA-II CFD code. The model includes major generic processes involved in soot formation during combustion, i.e., formation of soot precursors, formation of surface growth species, soot particle nucleation, coagulation, surface growth and oxidation. The formulation of the model within the KIVA-II is fully coupled with the mass and energy balances in the system. The model performance has been tested by comparison with the results of optical in-cylinder soot measurements in a single cylinder Cummins NH Diesel engine. The predicted soot volume fraction, number density and particle size agree reasonably well with the experimental data. The analysis of soot formation process based on model predictions also indicates consistency with the experimental observations derived from laser-sheet imaging studies.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Cycle Simulation Diesel HCCI Modeling Studies and Control

2004-01-2997

View Details

TECHNICAL PAPER

3D-CFD Modeling of Conventional and Alternative Diesel Combustion and Pollutant Formation - A Validation Study

2007-01-1907

View Details

TECHNICAL PAPER

Approach to Low NOx and Smoke Emission Engines by Using Phenomenological Simulation

930612

View Details

X