Discussion Forum

Hello every one,

I'm a student and I need to study a fuel injector as a project. I need some advices to begin with, for instance which physics should I use to model the transport of the fuel droplets from the exit of an injector nozzle, and along a tube with flowing air. My goal is to see at the end, how the fuel reach the combustion chamber a little farther down the pipe.

I use 4.2a with a turbulent physic node, solved with a stationnary solver to have the velocity field and turbulence of the injected air. I have also the particule for fluid physic enabled and solved with a time dependant solver. I have the fuel injection inlet with a initial velocity defined, and I use the drag node to see the trajectories of the particles when they reach the turbulent air flow. But the particles stop right after the inlet, since, I think, I specified in the drag options to use the results of study1 (turbulent air flow) as velocity field en turbulent field. And as the velocity field after the inlet is zero, I think that is why the particles stop.

Eventually, I would like the particles to interact with the fluid flow, but maybe not with the drag option which forces me to inject my particles in the flow. You wil find enclosed my model for further information.

Thank you for your help, regards.