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Old   April 20, 2011, 06:56
Default Blood flow in aorta
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Marko Milasinovic
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Hello. I need to determine physical dimensions of blood flow in abdominal aorta. Can you tell me how to insert profile velocity in function of time as inlet boundary? I attached velocity function of time.
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Old   April 20, 2011, 18:58
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A user function with a 1D interpolation will do it easily.
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Old   April 21, 2011, 04:11
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Marko Milasinovic
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Can you describe how to do it?I started recently to use CFX.
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Old   April 21, 2011, 11:33
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Dear friend

I am also doing the same problem .
I want to know how did you get the graph?
what function did you use to get the graph?
I also need this answer. please give your answer if you find.

Thank you

Govind
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Old   April 22, 2011, 11:22
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This should help you out:

http://www.edr.no/blogg/ansys_blogge...nsient_profile

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Old   April 22, 2011, 12:25
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Marko Milasinovic
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My professor is working with vascular problems. He measured blood velocity in coronal arthery. I adjusted his values for my problem.
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Old   April 26, 2011, 06:35
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My professor is working with vascular problems. He measured blood velocity in coronal arthery. I adjusted his values for my problem.


Dear milasko

How your professor got the values .what function did he use for getting number of values.
if he uses any function like sin or cos please let me know.I need it urgently. I assume that without a function cannot get number values . am I right?
what equation did he use to plot the graph?


Thank you

kmgraju





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Old   April 26, 2011, 11:32
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I think that he performed examing on the pacient.I didn`t ask.The reason is that he is not at my department, I took exam because I earlier worked in FLUENT some simple cases.
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Old   July 2, 2011, 07:14
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I fill out csv file format for profile boundary condition. when I try to initialise profile data I receive error "Invalid data heading seen in profil `ulaz` at line 8. Between 1 and 3 spatial field names must be specified." Can you tell me what is wrong? I attached picture of profile boundary condition.
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Old   July 4, 2011, 02:33
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"Between 1 and 3 spatial field names must be specified."

You specify X,Y,Z,t == 4 "spatial" fields. If you want to include time you must remove one of the spatial fields.
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Old   July 4, 2011, 04:41
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Ok.I understand. I didn`t know that I can`t specify more than 3 fields.Thanks a lot.
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Old   February 7, 2012, 17:38
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I realise this is a few months old, but was wondering about something similar, I've looked through the website that was suggested and wondered what the spacial fields actually represent? At the moment I just have time and velocity
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Old   February 8, 2012, 04:00
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Marko Milasinovic
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Spatial fields have function to identify nodes positions to which you have dedicate velocity
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Old   February 8, 2012, 11:07
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That makes sense and is what I suspected anyway, but when I run my simulation it seems to not let me view more than one time-step, I only have 0, though the function file I made says it should last 1 second, do you know how I'd fix this so I could view it at different points within my 1 second?
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Old   February 8, 2012, 13:07
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Marko Milasinovic
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Take a look on 5th post.You would notice that you need to set different time value for other steps
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Old   February 8, 2012, 13:18
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Do you mean different values as in:

this
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Old   February 8, 2012, 14:33
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Marko Milasinovic
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Yes, like that
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Old   February 8, 2012, 14:36
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I had done that before, what I'm asking is if there is a way to view the fluid at say the first time-frame and the last, similar to the example in the 5th post? I can't find this...
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Old   February 9, 2012, 12:08
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Marko Milasinovic
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you need to perform calculation and after that using CFD-Post you can see fluid velocities
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Old   February 9, 2012, 19:42
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Hi

Is your flow in the x direction?
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