[OpenFOAM] velocity field for alpha 0 to 0.5 only

Xhoven · June 11, 2011, 20:14

Hello,

If I have a free surface model, how could I make a velocity field that is only for the fluid and not for air? I see that I can create a contour and contour by an alpha value of 0.5 which will give me the interface of the fluid and air, but could I make a velocity profile for alpha = 0 to 0.5?

DITO · June 22, 2011, 05:41

Hi Xhoven

I don't know whether this is what you want, but what you could do, is to create an Isovolume of alpha from 0 to 0.5 and cut this via a slice.
the new slice you can color with the velocity.

Cheers,
DITO

akidess · June 22, 2011, 06:33

I'm assuming you want to do this in paraview? Use the threshold filter with alpha 0.5, and then the glyph filter on the resulting data set.

June 11, 2011, 20:14	velocity field for alpha 0 to 0.5 only	#1
Xhoven New Member Joel Join Date: Jun 2011 Posts: 4 Rep Power: 14	Hello, If I have a free surface model, how could I make a velocity field that is only for the fluid and not for air? I see that I can create a contour and contour by an alpha value of 0.5 which will give me the interface of the fluid and air, but could I make a velocity profile for alpha = 0 to 0.5?

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June 22, 2011, 05:41		#2
DITO New Member Join Date: Jun 2011 Posts: 14 Rep Power: 14	Hi Xhoven I don't know whether this is what you want, but what you could do, is to create an Isovolume of alpha from 0 to 0.5 and cut this via a slice. the new slice you can color with the velocity. Cheers, DITO

June 22, 2011, 06:33		#3
akidess Senior Member Anton Kidess Join Date: May 2009 Location: Germany Posts: 1,377 Rep Power: 29	I'm assuming you want to do this in paraview? Use the threshold filter with alpha 0.5, and then the glyph filter on the resulting data set.