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Michal February 16, 2005 10:08

Fluent blood flow BC
I am working on a project involving pulsatile blood flow simulations (using FLUENT) through Z stent device used to cure Abdominal Aortic aneurysms. I am able to obtain inlet boundary conditions, in terms of pressure profile and velocity, but I am not sure what to use for my outlet conditions. The device is about 17cm long and I don't have enough information about the variation in pressure and/or velocity along this short distance. I would be grateful, if anyone could suggest some solution. Thanks.

Q. Hao February 17, 2005 13:19

Re: Fluent blood flow BC
Since the mean vascular pressure is 90 mmHg, and it is in AAA, I think you can assume the outlet pressure is 90 mmHg.

But I am not familiar with Fluent, I used FIDAP. Your question make me think another question:

In FIDAP tube flow examples, why there is no oulet boundary condition added? or their default is the outlet P* is zero?

Meghesh February 22, 2005 18:17

Re: Fluent blood flow BC
Hi. I am working on the pulsatile blood flow through stnosed arteries. I am curious as to what kind of pusatile conditions you use at the inlet (For eg. Do you use a sinusoidal velocity profile at inlet)? I have prescribed outlet B.C. as press outlet. But it does not seem to give me good results. Let me know if you come across something that works.

Bikash February 23, 2005 00:00

Re: Fluent blood flow BC
i guess you use outflow boundary conditions, if you donot know the conditions at the outlet.

Michal February 23, 2005 07:51

Re: Fluent blood flow BC
I'm trying to imitate realistic flow profile for the abdomen region, which is looks like damped sinusodial oscillation. But i still haven't fully developed the model.

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