Hi there, I'm learning Houdini fluid these days and have some questions. The first is about vorticles. I have a moving geometry used as the source of fire or smoke and I need to have some vorticles affecting the simulation all the time. But I can't find a way to make those vorticles following the container. When the source and the container move away, those vorticles are still at the same position. How could I make them follow the container?

The second question is about “resize”. I'm just wondering if it's possible to have one option in the “smoke object” node, to make the container move together with the source, which seems more intuitive. At least I don't need to adjust the size I want at Frame 2 on “resize” node by changing the lower and upper bound.

Thanks,