Characterization of the ECN spray A in different facilities. Part 2: Spray vaporization and combustion
Ben Houidi, Moez
Malbec, Louis Marie
Permanent link to this recordhttp://hdl.handle.net/10754/666503
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AbstractEngine Combustion Network (ECN) has the objective to provide experimental data with high accuracy in order to reach new steps in scientific understanding of spray combustion at conditions specific to diesel and gasoline engines to improve and validate computational fluid-dynamic models. To extend this network, two new facilities based on rapid compression machines were designed and improved to reach the spray A thermodynamic conditions, which are recommended by the ECN to represent current common-rail light duty diesel engines. In this paper, the results of liquid and vapor spray penetration as well as ignition delay (ID) and lift-off length (LOL) obtained with these rapid compression machines were compared to the results obtained in the constant volume preburn vessel of IFPEN. The specificities of each experimental apparatus allowed to bring complementary elements of understanding like confinement effects. In non-reactive condition, the liquid and vapor sprays were characterized by diffused-back illumination and Schlieren technique, and in reactive conditions, the LOL and the ID by OH* chemiluminescence. The analysis of the results with regard to the boundary conditions (temperature, velocity, confinement) enabled validation of these two new facilities and contributed to enhance the database of ECN, highlighting the confinement effect typical of piston engine operation.
CitationHespel, C., Ben Houidi, M., Ajrouche, H., Foucher, F., Haidous, Y., Moreau, B., … Malbec, L.-M. (2020). Characterization of the ECN spray A in different facilities. Part 2: spray vaporization and combustion. Oil & Gas Science and Technology – Revue d’IFP Energies Nouvelles, 75, 78. doi:10.2516/ogst/2020070
SponsorsThe authors acknowledge the National Research Agency (contract ANR-14-CE22-0015-01) for financial support to the ECN-France project and Region Centre Val de Loire (CPER 2007-2013 Energies du Futur) and FEDER for financial support to build the NOSE set-up. The authors thank Laurent Hermant for helping with the experiments at IFPEN. The authors greatly acknowledge the valuable discussions with Lyle Pickett, Koji Yasutomi and Russ Fitzgerald when preparing for “ECN Standardization” topic during ECN 5 workshop.
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