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Old   May 24, 2009, 18:00
Default flowType
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Alessio Alexiadis
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Hi

does anybody know what the utility flowType (page 91 userguide) does?

Alessio
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Old   May 24, 2009, 21:32
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J. Cai
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"flowType Calculates and writes the flowType of velocity field U at each
time"

Are there some other problems?
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Old   May 25, 2009, 03:09
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Alberto Passalacqua
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Hi Alessio,

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|)

with

D -> symm(gradU)
omega -> skew(gradU)

You can see the details of the implementation in flowType.C

Best,
Alberto
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Old   April 1, 2013, 16:11
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Ehsan
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what does this values for instance mean according to flowType?
they're not 0 or -+1:
Code:
0.07651246272745461
0.009874601375924783
0.4152505236808813
0.9556226864937011
0.9416049188595975
0.5856388528734834
0.2512780734589708
0.2002043050379488
0.2956873682252182
0.344476903828302
0.392744880848549
0.4422645731141795
0.5060221916933719
0.603670873234636
0.791199009088522
0.728309604866278
0.3407973861953704
0.9500353914061376
0.3114390527424502
0.1782654103206394
0.1555218835283287
0.162709215687532
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