[MichiMichi]

Hi all,

I am trying to incorporate a mechanism in Ansys CFX which can predict arteriosclerotic formation in an artery.
My idea is the following:
I have got a cylindrical shaped artery with a bifurcation. As the blood flows through this bifurcation artery several regions of the wall (which are imposed to a threshold value of Wall Shear Stress)become inflamed and start to swell. This results in a formation of a bump (solid material) which reduces the cross sectional area of the flow.

You can see the explanation in the picture below.

I already tried to increase the viscosity of the blood to extreme high values (from 3.6e-3 Pa s to 1000 Pa s), but this leads to very high pressures of the high viscous parts of my fluid. I want this parts to "rest". I looked through the multi phase tutorials but couldn't find anything which really fits my problem. Maybe it is possible to some kind deform the surface mesh of the artery...

In general it should be a solidification process, I've read that this is possible to implement in FLUENT.
Do you have some ideas how to do this in Ansys CFX? Or maybe some keywords to look at.

Thank you very much!
Michael