# Symmetry vs. Cyclic

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

 March 5, 2004, 21:35 Symmetry vs. Cyclic #1 BK Guest   Posts: n/a Geometry for my case * cylinderical coordinate R: 0 ~ 10cm (Nr=100) THETA: -1deg ~ 1deg (Nt=1) Z: 0 ~ 10cm (Nz=100) Therefore, I used the symmetric boundary for THETA=-1DEG plane and THEAT=+1DEG plane. But the result is stange at axis symmetric line(R=0). In this case, Do I use the cyclic boundary for THETA planes?

 March 6, 2004, 05:26 Re: Symmetry vs. Cyclic #2 Brian Guest   Posts: n/a Did you do a VMERG? The collapsed cells along the axis must have the correct structure. Also try CFLIP PRISM to ensure the prism cell numbering is correct. Cyclic boundaries should be used when there is flow across the boundary, i.e. when you have tangential flow. If there is nothing to induce flow in this direction, use summetry boundaries.

 March 8, 2004, 03:59 Re: Symmetry vs. Cyclic #3 BK Guest   Posts: n/a I did VMERG. I used cyclic boundary with considering 3-D and intial value U,V,W=0. and.. I got the resonable results. Thank you, Brian.

 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 diegon OpenFOAM Running, Solving & CFD 1 December 2, 2014 01:45 Zealouk CD-adapco 0 September 17, 2008 11:28 gosia stein CD-adapco 5 June 13, 2007 07:39 sijin james CD-adapco 3 May 15, 2007 12:07 Bard CD-adapco 0 December 16, 2006 07:41

All times are GMT -4. The time now is 13:18.