Creating vector fields for particular effects

Okay, that looks like the particles are actually created in a ring, then use a field with some turbulence in it to spread them out into tendrils.

You could put a pipe collision object into your Maya fluid, and force the fluid through it - however I’m not sure how well this’d behave in Unreal. You’d probably have to have the particles collide with some geometry in your Unreal scene for it to work. Getting Maya fluids to go through pipes is always tricky however, and usually requires a pretty high res voxel grid to work.