# Periodic boundary condition

 Register Blogs Members List Search Today's Posts Mark Forums Read

 May 1, 2003, 04:02 Periodic boundary condition #1 Arif Guest   Posts: n/a I am simulating a flow problem using periodic boundary condition. Two end of a circular tube consider as translational periodic boundary. According to the fluent documentation, we can specify mass flow rate or pressure gradient for periodic boundary condition. In my case I specified mass flow rate. Now I want to calculate pressure loss to compare with standard friction factor correlation. In the article 8.3.2 of user's guide showed that Local pressure gradient =gradient of periodic component of pressure + gradient of linearly-varying component of pressure We can get gradient of a linearly-varying component from periodic condition panel. How can we find the gradient of periodic component of pressure? Any help in this regards is greatly appreciated. Arif

 December 22, 2013, 00:14 Hi Arif #2 New Member   ASHRAF ALFANDI Join Date: Oct 2012 Posts: 17 Rep Power: 4 In this case, the "linearly-varying component = beta" is the actual pressure drop across the your domain in which FLUENT calculates the beta that corresponds to the input mass flow rate. Once the calculation is done, go back to the periodic B.C panel and check "beta" and thats you dp. good luck.....

 January 17, 2014, 07:48 #3 Member   Join Date: Dec 2013 Posts: 53 Rep Power: 3 Hi everyone!!! I am trying to simulate a 1d heat transfer in a medium confined between two large walls (top and bottom wall). I created a 2d rectangle in icem cfd. For top and bottom lines I have given the boundary conditions as walls. But I am not clear what boundary condition I should use for left and right lines which are not supposed to be present. (I created them only for meshing).. do I have to use periodic condition? Pls reply.

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post peob OpenFOAM Running, Solving & CFD 2 August 14, 2014 09:07 haihek FLUENT 3 January 22, 2014 05:10 martor FLUENT 2 April 10, 2012 19:17 CFD XUE FLUENT 0 July 9, 2010 02:53 Rola Afify FLUENT 2 September 12, 2006 08:39

All times are GMT -4. The time now is 07:27.