Help with Designing Micropumps

Hello Mr. Ivar Kjelberg,

I had some questions on COMSOL, and I managed to get some answers here. However, I still have some unsolved questions that no one answered them. I have noticed that you are very active in the forum and you always help people with very good answers. So, I thought that you might be able to help me, if you don not mind.

Here is a link of a question that I asked before 2 days ago, but no one answered it. Maybe you did not notice it:

www.comsol.com/community/forums/general/thread/44539/

The question was:

What is/are the best physic(s) to be used when designing a PDMS micropump that has a deformed membrane?
What is the best of these choices for this kind of design:

1. Solid Mechanics + Laminar Flow
2. Solid Mechanics + Laminar Flow + Moving Mesh
3. Fluid Structure Interaction

or any other choices, if possible ...
May you explain the reason behind your choice?

Best regards,
Marwan