[eljohnso]

I am probably missing something very simple, but I'm having a difficult time simulating a simplified, pulsatile flow.

I'm running a short and straight aneurysm model (no branching) to compare my meshes against literature. Using rough interpolations of the waveforms in Scotti (http://www.pubmedcentral.nih.gov/art...?artid=1298313 ... figure 2) I have inlet velocity and outlet pressure conditions with respect to time.

My problem is, not knowing enough to set up the system?, the pressure outlet is causing backflow into the system and CFX terminates early. If I ignore the pressure, my wall shear stresses are two orders of magnitude off. What am I missing while setting up the BCs?

Thanks for any help and feel free to tell me I'm doing it all wrong :/

Erick