Hello All,

Does anyone know how to prevent dynamic systems from accelerating out of control.
Let say I have a vortex field that is set to a volume shape of sphere and I want a group of objects to swirl around inside of the sphere.

Now matter how low I set the trap inside or adjust the other attributes the objects never remain at a steady state swirling around inside of the sphere. It always end up gradually accelerating and then at some point everything just flies away off into the distance.  Any suggestions on how to go about balancing the system.

That is a bit of the nature of a vortex field. If you want a continuous flowing circle type effect try using a Volume Axis field.

Also to calm the particles down if you have to use a vortex field use the Conserve parameter on the particle itself. It will give you the effect I think you are looking for but it will still expand even though its expansion can be reduced to almost nothing.

Todd Palamar
http://www.speffects.com