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velocity field for alpha 0 to 0.5 only

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Old   June 11, 2011, 20:14
Default velocity field for alpha 0 to 0.5 only
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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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Old   June 22, 2011, 05:41
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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.

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Old   June 22, 2011, 06:33
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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.
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