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inlet velocity profile

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Old   April 19, 2016, 00:45
Default inlet velocity profile
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Puya
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Hi,
Does anybody know how to define a second order polynomial as velocity boundary condition?
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Old   April 19, 2016, 13:12
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Joachim Herb
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Either you define a new boundary condition, as describe e.g. at http://de.slideshare.net/fumiyanozak...ns-in-openfoam

or you use groovyBoundaryCondition from swak4foam:
https://openfoamwiki.net/index.php/Contrib/groovyBC
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Old   April 19, 2016, 13:35
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Puya
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Thank you but I mean spacial polynomial. I want to model a second order curve as inlet velocity profile.
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Old   April 19, 2016, 16:01
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With both ways (write a new boundary condition or use groovyBC) you can use the coordinates of the faces for calculating the velocity (direction and magnitude) per face to get a spacial distribution.
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Old   April 21, 2016, 01:18
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Thank you.
Could you possibly correct the following code for me. I dont know why it does not work.

TopWall
{
type uniformFixedValue;
uniformValue polynomial
(
((0 1 0) (100 0 0))
((1 1 0) (20 0 0 ))

);
}
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