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calculating time residence in an axial pump

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Old   November 25, 2013, 05:37
Default calculating time residence in an axial pump
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Mohamad Alagheband
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Hi,
I'm trying to calculate time residence of blood in an axial blood pump and I have no idea how to do it.
Thanks for any advice.
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Old   November 25, 2013, 10:48
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Edmund Singer P.E.
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Steady State Solution?

Short answer:

-Create a new varible i.e. rtime [s]
-Create subdomain of your whole domain and set a constant source term for rtime in that subdomain
-Set rtime = 0 at your inlet
-Run solution solving for this variable (you can freeze your old solution and just run solving for this variable if you already have a result).


For more details - Look up "Age of Air" in the search
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Old   November 25, 2013, 11:08
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Mohamad Alagheband
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Quote:
Originally Posted by singer1812 View Post
Steady State Solution?

Short answer:

-Create a new varible i.e. rtime [s]
-Create subdomain of your whole domain and set a constant source term for rtime in that subdomain
-Set rtime = 0 at your inlet
-Run solution solving for this variable (you can freeze your old solution and just run solving for this variable if you already have a result).


For more details - Look up "Age of Air" in the search
yes it's steady state and
Thank you a lot, that was very helpful .
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Old   November 25, 2013, 17:06
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Glenn Horrocks
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For steady state simulations you can also do this using a streamline. This has the advantage that it is just post-processing, you do not need to do a new simulation.

Put a streamline on your domain starting from the time=0 point. On the color tab of the streamline select mode=time. That's all, very simple.
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Old   November 26, 2013, 05:10
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Mohamad Alagheband
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thanks Glenn
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