Regarding outlet bc in bifurcated arteries
 

Hi all,

I am working on blood flow analysis in bifurcated arteries. My model has one inlet and two outlets with extended domain. The model is simplified using symmetry bc at one side. The main branch and side branch are of different diameters.

The flow is steady and in-compressible. I have gone through some literature which shows different boundary conditions that are used in blood flow modeling, like pressure outlet, outflow, impedance, murrays law and windkessel bc.

1. At present I have used constant pressure outlet BC (zero gauge pressure) at both exits. Is this BC valid to solve such problems? Or should I use murrays law where the flow rate is dependent on diameter.

2. The outlet bc like impedance and windkessel are used for mostly pulsatile flow conditions. Can they be applied to steady state analysis as well?

Note: there is insufficient clinical data, hence the outlet pressure is not known.

Kindly help me with my queries, which will help me to proceed furhter in my work

Thanks and regards