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Implementation of a relaxation boundary condition |
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#1 |
Senior Member
Dr. Fabian Schlegel
Join Date: Apr 2009
Location: Dresden, Germany
Posts: 222
Rep Power: 19 ![]() |
Hello Foamers,
I would like to implement a new boundary condition for open boundaries for my LES. I found a well written paper of Palma and Matano (1998) "On the implementation of passive open boundary conditions for a general circulation model: The barotropic mode". They suggest various types of passive open boundary treatments, e.g. a radiation condition (named advectiveBC in Openfoam) or the one I am interested in: relaxation methods. The basic equation looks as follows: ![]() ![]() ![]() ![]() kind regards, Fabian |
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#2 |
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Niels Gjoel Jacobsen
Join Date: Mar 2009
Location: Copenhagen, Denmark
Posts: 1,903
Rep Power: 38 ![]() ![]() |
Hi Fabian
I have been doing exactly what you are requesting for free surface water waves. The entire framework is readily available, however, you might need to modify some of the classes to eliminate the need of the void ratio. I have released the framework, and it is described here: http://openfoamwiki.net/index.php/Contrib/waves2Foam Best of luck, Niels |
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#3 |
Senior Member
Dr. Fabian Schlegel
Join Date: Apr 2009
Location: Dresden, Germany
Posts: 222
Rep Power: 19 ![]() |
Alright sounds beautiful. I will check it. Thanks a lot.
Fabian |
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