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Average Velocity

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Old   May 31, 2013, 16:47
Default Average Velocity
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Michal
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Hello,

I simulate a velocity distribution in an exhaust channel.
After solve I check a velocity distribution (as contour) in an selected area.
Is there a posibility to show one average value of velocity in this selected area? (for exampe Area1, d=200mm, v=+1,2 m/s)

Michal
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Old   June 1, 2013, 06:13
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Glenn Horrocks
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Yes, I think you can put CEL expressions in a text object.
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Old   June 1, 2013, 07:22
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ave(velocity)@area
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Old   June 1, 2013, 08:37
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Michal
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Hello,

thank you for advices:

In CFD-post I wrote an expression: ave(Velocity)@Area but I have an error:

"The following unrecognised name was referenced: Area."

Velocity and Area are under default variables in CFX.
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Old   June 1, 2013, 10:04
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Erik
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Rasool just wrote the word area to be general. Really put the name of that specific surface there.
ave(Velocity)@B1.122 or Outlet or something like that.
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Old   June 2, 2013, 09:58
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The easiest way to do that is by using "Function Calculator" in CFD-Post (tab Calculators).

If you want to monitor this quantity during a CFD simulation, you will have to define the suggested CEL in CFX-Pre under "Output Control" (tab Monitor).
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Old   June 3, 2013, 01:51
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Lance
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Quote:
Originally Posted by Szczepan View Post
In CFD-post I wrote an expression: ave(Velocity)@Area but I have an error:
use areaAve()@ instead, ave()@ will most likely not give you the true average velocity over the surface
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