Comparative Study of Diesel Oil and Biodiesel Spray Combustion Based on Detailed Chemical Mechanisms
Artikel i vetenskaplig tidskrift, 2014

In the present work, a semidetailed combustion mechanism for biodiesel fuel was validated against the measured autoignition delay times and subsequently implemented in the FORTE CFD engine simulation package (Reaction Design Inc., 2010, "FORTE, FOR-UG-40102-1009-UG-1b," Reaction Design Inc., San Diego, CA) to investigate the spray characteristics (e. g., the liquid penetration and flame lift-off distances of rapeseed oil methyl ester (RME) fuel in a constant-volume combustion chamber). The modeling results were compared with the experimental data. Engine simulations were performed for a Volvo D12C heavy-duty diesel engine fueled by RME on a 72 deg sector mesh. Predictions were validated against measured in-cylinder parameters and exhaust emission concentrations. The semidetailed mechanism was shown to be an efficient and accurate representation of actual biodiesel combustion phases. Meanwhile, as a comparative study, the simulations based on a detailed diesel oil surrogate mechanism were performed for diesel oil under the same conditions.

Reactive Flow Computations





Junfeng Yang

Chalmers, Tillämpad mekanik, Förbränning

Valeri Golovitchev

Chalmers, Tillämpad mekanik, Förbränning

Valeri Golovitchev

Reaction Design, Inc.

E. Meeks

Reaction Design, Inc.

Journal of Engineering for Gas Turbines and Power

0742-4795 (ISSN) 1528-8919 (eISSN)

Vol. 136