Is it possible to give a rotation frequency to boundaries?

Hale · July 31, 2013, 11:27

Hi to all,

I have a vertical circular pipe divided into two part: the upper and lower part. The upper part has to rotate with a given frequency while the lower one is stationary. I wanted to know if it's possible to do give a frequency to a boundary? if yes how should it be done?

Thanks for your time

immortality · August 3, 2013, 21:08

You can use groovyBC library if you like.
Is it 3d?could you put a image of it here?

Hale · August 4, 2013, 04:14

Quote:

Originally Posted by immortality

You can use groovyBC library if you like.
Is it 3d?could you put a image of it here?

Thanks a lot for your reply.

Yes, it is a 3D circular pipe. Actually I have had some problems with defining the geometry in OpenFoam but I will upload it as soon i'm finished with that (latest tomorrow morning).

Until then I can upload the 3D sketch of the model. Note that the model has rectangular cross section in the sketch but it is circular in reality.

immortality · August 4, 2013, 05:06

Hi
I couldn't see the figure please upload it anywhere else.
do you want to introduce a BC on the rotating wall or on the surroundings?

Hale · August 4, 2013, 05:17

Hi,

I want to give a frequency to the walls (not surroundings) so they rotate.

I have attached the figure. Hope this works well now.

July 31, 2013, 11:27	Is it possible to give a rotation frequency to boundaries?	#1
Hale Member Hale Join Date: May 2013 Posts: 53 Rep Power: 12	Hi to all, I have a vertical circular pipe divided into two part: the upper and lower part. The upper part has to rotate with a given frequency while the lower one is stationary. I wanted to know if it's possible to do give a frequency to a boundary? if yes how should it be done? Thanks for your time

August 3, 2013, 21:08		#2
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 26	You can use groovyBC library if you like. Is it 3d?could you put a image of it here? __________________ Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King. To Be or Not To Be,Thats the Question! The Only Stupid Question Is the One that Goes Unasked.

August 4, 2013, 05:06		#4
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 26	Hi I couldn't see the figure please upload it anywhere else. do you want to introduce a BC on the rotating wall or on the surroundings? __________________ Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King. To Be or Not To Be,Thats the Question! The Only Stupid Question Is the One that Goes Unasked.

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