Modelling a Fuel Injector
 

Hi,

I'm a UG B.tech student, relatively new to CFD as a whole, and my assignment is to Model a Gasoline Direct fuel injector Spray to determine its cone Angle, Sauter mean diameter, dispersion, etc. From what i Gather, Its advisable that i use FLUENTs VOF model, Defining the volume fraction of liquid (say water, for now). For the sake of simplicity I'm using a Planar cut out and the Axisymmetrical 2D space, with inlet pressure for water as 2000Pa and 70000 Pa for air (guage). But every time i Try to run the simulation I get readouts saying "Reversed flow in X faces on pressure outlet Y". If someone could help me out with why I'm getting this error, or even better walk me through how to go about this simulation, I'd be much obliged.

Thanks