does anybody know what the utility flowType (page 91 userguide) does?
"flowType Calculates and writes the flowType of velocity field U at each
Are there some other problems?
it tells you if the flow is rotational (l = -1), a simple shear flow (l = 0) or a planar extensional flow (l = 1), where
l = (|D| - |omega|)/(|D| + |omega|)
D -> symm(gradU)
omega -> skew(gradU)
You can see the details of the implementation in flowType.C
what does this values for instance mean according to flowType?
they're not 0 or -+1:
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