Hi,
In the image P5.jpg, I created a geometry to shape the fluid. The particle flows along the geometry. The effect is made by Collision.

My question is coming. I didn't find a workable parameter to disable the collision effect. I need a parameter to set keyframe to stop the collision at a specific frame.

This video is my reference at 01:06 as shown in P4.jpg.
https://vimeo.com/12278051 [vimeo.com]
In the image, there is a geometry to guide the liquid and then disappears. I want to use similar concept for the current shot.

Thanks for your suggestion and help.

Tony

What are you using for collision, RBD or Volume?
If Volume then animate Activation.
And for RBD you can animate merge's activation or use a null and switch it with rbd after certain frame, this is what I usually do.

Yeah, you're right and great.
It works very well.
My mistake was that I didn't know which kind of the collision I used.
Thank you.
You really really gave me a big hand.

Tony