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Mean Velocity profile!

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Old   December 17, 2007, 15:19
Default Mean Velocity profile!
  #1
Usman
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I want to plot mean axial velocity graph against the vertical distance in a backward facing step. In the paper they have normalised the velocity by u/U. I know big U is my inlet velocity, but how can i obtain u.

Regards Usman
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Old   December 17, 2007, 17:10
Default Re: Mean Velocity profile!
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Glenn Horrocks
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Hi,

This is easily obtained in CFX-Post. Generate a line object where you want the profile and export u velocity along the line.

Glenn Horrocks
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Old   December 17, 2007, 20:04
Default Re: Mean Velocity profile!
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Usman
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Sorry i forgot to mention, this is for large eddy simulation. Can i use this method for LES as well which gives the instantenous velocity not mean velocity! Thanks

Usman
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Old   December 18, 2007, 09:02
Default Re: Mean Velocity profile!
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Usman
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Just to add one more thing i have not written transient statistics in CFX-Pre either! I have saved trn files for every fourth time step though. How can i use this data to get my mean vlaues.

Usman
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Old   December 18, 2007, 11:51
Default Re: Mean Velocity profile!
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UnderwaterAlex
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Usman - See my post to Maan a few threads down. Basically you can make a chart with respect to time in Post and have that collect the data for each timestep you have.

Hope this helps,

-Alex
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