Evaluation of breakup models for marine diesel spray simulations
Haohan Li  1@  , Roel Verschaeren  1@  , Gilles Decan  1@  , Tarek Beji  1@  , Sebastian Verhelst  1, 2@  
1 : Ghent University
2 : Lund University

The open-source CFD software OpenFOAM was used to simulate evaporating, high pressure marine diesel sprays. The most frequently used models, based on Kelvin-Helmholtz and Rayleigh-Taylor instabilities, are adopted to describe the breakup of liquid fuel. The proposed approach was first validated using experimental data from the Engine Combustion Network for heavy-duty diesel engine sprays. A satisfactory agreement with SANDIA's experimental data demonstrated that the simulations can correctly capture the spray processes.

2D simulations were then performed using the same approach and compared with the optical spray measurements obtained from the GUCCI (Ghent University Combustion Chamber I) setup. Significantly higher penetration predicted by simulation implied that the current approach cannot reproduce the marine diesel spray processes and thus needs to be improved. A quantitative analysis of the different cases is made to seek possibilities for improvement.

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