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-   -   flowType (http://www.cfd-online.com/Forums/openfoam-solving/64791-flowtype.html)

sersunzo May 24, 2009 18:00

flowType
 
Hi

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

Alessio

chiven May 24, 2009 21:32

"flowType Calculates and writes the flowType of velocity field U at each
time"

Are there some other problems?

alberto May 25, 2009 03:09

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

immortality April 1, 2013 16:11

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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