[Svensen]

I have a STEP file with a geometry of cerebral artery. Using operation SurfaceFromFaces a surface of the vessel wall was extracted to create a solid region with a thickness of 1 mm.
The boundary and initial conditions were applied for fluid, and FluidSolidInterface was defined for solid. Dynamic Mesh option was enabled in Fluent and regions of deformation were defined.
All settings were using settings from this lesson on Youtube: https://www.youtube.com/watch?v=DGPmyGFnzhA

However during computation of FSI task I've got an error. For short, Fluent got a divergence in a solution(divergence detected in AMG solver: x-momentum).
But if I run Fluent without coupling it with Transient Structural and without Dynamic Mesh option the there are no errors any more.

Maybe someone had the same error before and can help me to solve it.
A project archive is in cloud storage (too big, about 50 Mb): https://yadi.sk/d/qESZIeqIne3gf

Log of an error is in attached file.
Thanks.

[krishna18]

Change your pressure outlet to outflow and try again and check about the coupling part you will not get divergence

If possible try to reduce the time step too

[Svensen]

I'm sorry, but your recommendations don't work...