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Gradient of the velocity magnitude

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Old   June 6, 2006, 05:49
Default Hi all, does someone know, ho
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Anja Stretz
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Hi all,
does someone know, how to get the gradient of the velocity magnitude?

Thanks
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Old   June 6, 2006, 05:57
Default volVectorField gradMagU = fvc:
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volVectorField gradMagU = fvc::grad(mag(U));

Clear enough? :-)

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Old   June 6, 2006, 06:33
Default Yes, clear. And what about
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Yes, clear.

And what about the normal velocity gradient, so that I receive a scalar?

Thanks again
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Old   June 6, 2006, 06:44
Default Sorry, I've meant to get a sca
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Sorry, I've meant to get a scalarField.
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Old   June 6, 2006, 08:18
Default The normal velocity gradient r
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The normal velocity gradient relative to what?
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Old   June 6, 2006, 08:39
Default The gradient normal to the sur
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The gradient normal to the surface, at least that exists for vectorFields, but I'm searching that for the scalarField magU.
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