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Two porous zones / Pressure loss

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Old   May 22, 2019, 10:21
Default Two porous zones / Pressure loss
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Lewin
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Hello everyone,
I am currently trying to simulate a converter with two substrates. As solver I use the rhoPorousSimpleFoam. The calculation converges well.
Unfortunately the result differs from the expected result. The pressure losses of the porous media are almost exactly half of the expected values. Only if I double the resistance coefficients do the expected pressure loss values come.
Does anyone have any idea why?

my porosityProperties

porosity1
{
type DarcyForchheimer;
cellZone porous_1;
d (-100 -100 16.846e7);
f (-100 -100 68.584);
coordinateSystem
{
type cartesian;
origin (0 0 0);
coordinateRotation
{
type axesRotation;
e1 (1 0 0);
e2 (0 1 0);
}
}
}
porosity2
{
type DarcyForchheimer;
cellZone porous_2;
d (-100 -100 8.41e7);
f (-100 -100 64.198);
coordinateSystem
{
type cartesian;
origin (0 0 0);
coordinateRotation
{
type axesRotation;
e1 (1 0 0);
e2 (0 1 0);
}
}
}


Thanks!
Yvgenius
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