Colapsing smoke?

Hi there!

I’ve been searching for a way to make a particular effect on my smoke for days… I did search on the forum, but I guest I didn’t found the optimal key word. So, basically, if anyone has an idea, it would really help me alot!

So, what I’m trying to do is an accretion disk for a black hole. I’m searching a way to have a thin smoke disk that start from a thin noodle of gas coming out of a star. (See the image bellow. The problem is that I can’t find a way to “colapse” my smoke in height and my accretion disk is alway very thick. Anyone would have an idea of how I could do it?

In other words, I would like that the smoke come out of the star surface, wrap it and get out in a thin band that go turn around the black hole to create a thin accretion disk.