Particles orientation in a fluid.

Hello Comsol user,

I wanted to test the following experiment: A fluid flowing in a pipe containing some elliptical particles.
The orientation of the particles in the fluid will than be dependent on their shape and i guess on the velocity field of the fluid.

I was thinking about doing this by using the two following modules: Laminar flow + Particle tracing.

So i have two questions:
- Is it possible to give a different shape for the particles than just the default spheric/circular shape given in the particle tracing module ?
- If not, do you have any other ideas about how to solve my problem with other modules ?

Thank you very much

Rémi