Hy!
New hope! I download the next programs:
- autodesk inventor 10 (in this program draw I the block design) [CAD]
- cosmos floworks 2004 (in this program the flow simulator) [CFD]
I made one microstrukture block in CAD, and I start the simulation. My processor (amd 1800+@2200MHz [t-bred], calculating to five hours and not complite jet!

No prolbem, I have time...
Whether can I the CFD program using in my render farm [13GHz cpu capaciti]? Good question, ha?
My blocks is 90%. I need tube connectors. I post presently pictures.