# peroidic boundary condition

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 April 13, 2007, 11:42 peroidic boundary condition #1 Ramesh.K Guest   Posts: n/a hi all, i am trying to simulate flow around a compressor blade, i wanted to use peroidic boundary condition to the surfaces but this particualar bc is not availabe in the menu of bc's when i use fluent. my question is do we need to specify any thing while we model the geometry and mesh the geometry for such cases. i have used icem cfd to mesh the volume around the blade. and i have done hexa hedral mesh for this particular volume. i request to tell me how to model, mesh and use peroidic boundary condition using fluent. thanking u all Ramesh.K

 April 13, 2007, 22:44 Re: peroidic boundary condition #2 sam Guest   Posts: n/a You can make periodic boundary using the fluent text command interface. or you should specify in Gambit. did u make the Hexa or Tetra mesh, Which type of compressor you are modeling. Regards

 April 14, 2007, 06:22 Re: peroidic boundary condition #3 Ramesh.K Guest   Posts: n/a hi sam, i have made hexa mesh using icem cfd. its an axial flow compressor. can u explain how to create with text command interface. bye ramesh

 April 17, 2007, 10:41 Re: peroidic boundary condition #4 Rahul Guest   Posts: n/a Dear Ramesh, I suggest you to make a geometry in GAMBIT (you can export your existing ICM geom to Gambit). In gambit you have to first "link" the edge/face meshes of the periodic boundary. In the zone specification, assign the edge/face to periodic boundry. this will give you the desired boundary condition of periodic once you export the mesh to Fluent.

 April 25, 2007, 06:28 Re: peroidic boundary condition #5 sam Guest   Posts: n/a No need to make geometry in Gambit. Just use the text command interface. it is easy just check out help of fluent.

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