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Stagnant Zone

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Old   April 29, 2019, 00:24
Question Stagnant Zone
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Hi everyone,

I did a simulation on Euler-Euler gas-liquid bioreactor and the result seems good. Afterward, i want to find the stagnant zone for liquid phase (the percentage of volume with low velocity per total volume). How can i discover the volume under certain velocity (lower than 10^-3 m/s)?
I would be really glad if there are some suggestions

Thanks
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Old   May 9, 2019, 13:46
Smile Stagnant Zone
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Hi

I am still wondering how to find the volume of the stagnant zone and i think it might be possible to do that through expression in CFD-post. What would be a good way to do that in expression? I mean how to write the expression since there is no formula about it
I hope someone can help me with this issue

Regards
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Old   January 22, 2024, 08:48
Default Stagnant Fluid
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Gabriel Binelli
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Quote:
Originally Posted by Fidho.im View Post
Hi

I am still wondering how to find the volume of the stagnant zone and i think it might be possible to do that through expression in CFD-post. What would be a good way to do that in expression? I mean how to write the expression since there is no formula about it
I hope someone can help me with this issue

Regards
Hey, were you able to do this post-processing?
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Old   January 24, 2024, 08:10
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Hey,
Would setting an iso-clip with your defined max velocity to create a surface, and then using surface integrals --> sum --> mesh --> cell volume to obtain a total volume work? You could then multiply this value with the average volume fraction (within the iso-clip) of your desired phase to obtain an approximate value, but I'm just guessing here.
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