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outlet boundary condition for open environment

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Old   March 1, 2014, 22:08
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Prasad
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Dear all,

I am trying to simulate current flow in a tank with open environment at the outlet. I have tried several ways only to find that the current is reflected at the outlet causing water level to rise in the tank.

I am running a simple case where current is generated at the inlet using waves2foam.

I would like to simulate an open environment for my outlet boundary condition.

But I find that the current flow does not leave the tank but is reflected.

Is there something wrong with my outlet boundary conditions ?

These are my boundary conditions for the outlet

alpha1:

type zeroGradient

p_rgh :

type buoyantPressure
value uniform 0

U:

type inletOutlet;
inletValue uniform (0 0 0);
value $internalField;

*internal Field was set to uniform (0 0 0)


I would also like to ask does setting potential current (0 0 0) in the wave properties file for the outlet absorb current generated at the inlet?

Thank you.

Regards,
Prasad

Last edited by wyldckat; March 2, 2014 at 04:04. Reason: Double posting
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Old   March 2, 2014, 03:49
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Prasad
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Hi all,

With regards to my earlier query, attached are the sectional views for alpha1 and U.
The current flow for the inlet which is at the left is 2 ms-1.

Thank you.

Regards,
Prasad
Attached Images
File Type: jpg velocity 10s.jpg (17.5 KB, 14 views)
File Type: jpg alpha1 10s.jpg (16.1 KB, 13 views)
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