[criolla]

Dear All,

I would like to ask about my problem. I use OpenFoam sprayFoam solver with Reitz Diwakar model combined with Rosin-Rammler dist. and sphere drag model, at 1 bar chamber pressure and 293 K fuel temperature .But at the same breakup constants at lower chamber pressure 0.4 bar it overpredicts spray penetration.Conversely, it underpredicts at 3 bar chamber pressure. I modified Reitz Dİwakar constants and it gets closer to the experimental data but I do not understand why it doesnt work? Or due to drag model? Do you have any idea ?

Thanks in advance.