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RANS Square duct

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Old   December 25, 2021, 10:28
Default RANS Square duct
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Thomas Granito
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Good morning,

I need help. I have a totally developed flow in a square duct with cyclic conditions. I have made some works with bar velocity (with commented code) and now i want to do a work with a fixed gradient pressure in order to have a fixed Reynolds number of friction(with the code in fvOptions).

How can i do?

I have thought to fix the pressure gradient with the code of momentum source in fvoption. But i can't how can i do. Could you give me some help, please?


This is my fvOptions:

/*momentumSource
{
type meanVelocityForce;

selectionMode all;

fields (U);
Ubar (1 0 0);
}*/
accelerationSource
{
type accelerationSource;
active on;
selectionMode all;
U U;
velocity one;
value (10 0 0);
}
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duct, pressure gradient, rans, square, turbulent flow

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