HI All,

Sorry for my question as It can be very easy for someone that knows how to use Houdini but I am a beginner and I cannot find a solution..
I am just trying to render a flow simulation but instead to render the flow simulation It renders a grey object , I suppose It s the initial geometry... How to hide It in the render ?

I have attached here 2 screenshots to show you better what I mean annd hope you can help,

Thanks a lot !

I think it is about the camera positioning. Are you sure that your ROP Camera is looking at the flow simulation?

Or if there are any other geometries on the obj level, turn off their blue render flags and just keep the flow animation's on.