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Old   February 16, 2005, 10:08
Default Fluent blood flow BC
  #1
Michal
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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.
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Old   February 17, 2005, 13:19
Default Re: Fluent blood flow BC
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Q. Hao
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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?

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Old   February 22, 2005, 18:17
Default Re: Fluent blood flow BC
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Meghesh
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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.
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Old   February 23, 2005, 00:00
Default Re: Fluent blood flow BC
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Bikash
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i guess you use outflow boundary conditions, if you donot know the conditions at the outlet.
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Old   February 23, 2005, 07:51
Default Re: Fluent blood flow BC
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Michal
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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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