[chandra shekhar pant]

Hello Foamers,
I am trying to simulate LES of aerofoil which is having 0.1 m chord length (x-axis) and 0.01 in span direction (z direction). Now I need the velocity profiles in chord-wise direction suppose at 4 locations 0.01, 0.04, 0.07 and 0.1. So I need to average in (span wise) z direction and plot the velocity profiles at these 4 locations. I am trying with line sample utility but this won't average in the z direction I guess, is there any easy way to fix this ? Any suggestion will be a great help.

[Ardali]

hi,

have you tried 'postChannel' for your purpose. I guess it should work by the its original form otherwise you can modify the code for your sake!

[chandra shekhar pant]

Hello Ardalan,

Thanks a lot for your help, could you please elaborate something how to use it?

[fumiya]

Hi,

If your mesh is a structured one, you can use columnAverage function object to calculate spanwise average:
https://www.openfoam.com/documentati...mnAverage.html

Hope this helps,
Fumiya

[chandra shekhar pant]

Hello Fumiya,

Thanks for your help and reply but unfortunately this case don't have structured mesh. Was wondering if some kind of sampling utility is there in openFOAM which first averaged the data in z direction and then using the "linesample--type sets" can give the final data in the required line (which could be added in controlDic). Thanks again for your time and help.

[fumiya]

Hi Chandra,

I think there is not straightforward way in the case of unstructured meshes.

As you know, line samplings are possible using sample function in OpenFOAM.
So, the following procedure will give you approximate values:

1. line sampling in span-wise direction
2. calculate arithmetic mean value of sampled values

Hope this helps,
Fumiya