Dynamic mesh for simulating vasoconstriction in bloodvessels
 

Is it possible to simulate time-based bloodvessel vasoconstriction vasodilation (radial diameter change) using dynamic mesh. I have one artery and two small veins inside a simple cylindrical body
For unsteady inlet BC at artery, I am using a sinosoidal udf for simulating bloodflow and was wondering if it is possible to simulate a constriction.

I searched for similar problem in forum but all i could find was geometries that already had a constriction.