Poiseuille2D Inflow

[František Prinz]

Hi,

I have a trouble with initialising Poiseuille velocity profile on the inlet. I have a rectangular channel with Poiseuille inflow on the left side and pressure outflow conditions on the right. But I get just a constant velocity at the inflow .
Here is my code (I simplified my problem for this purpose to make it more readable):
https://drive.google.com/file/d/1ypBYH3nUcKRaAgWonMrSUjfr-wOiX9ZH/view?usp=sharing
I suppose there is some trivial mistake which I overlook, thank you for every help.

Regards
Frank

[Nicolas]

Hi Frank,

is there any particular reason you changed the original line

T distance2Wall = converter.getConversionFactorLength();

to

T distance2Wall = converter.getLatticeLength(ly0_new/2.);

?

In any case, in your setup this results in a deformed poiseuille profile giving you the impression of a constant value. Just restore the line to its original version and it will probably work the way you intended it to.

Regards,

Nicolas

[František Prinz]

Hi Nicolas,

thank you very much, I thought that distance2Wall is the Radius of the channel, but it is the difference to the nearest node.

Regards,
Frank

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