CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

Symmetry and Periodic boundary conditions

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 20, 2011, 08:58
Question Symmetry and Periodic boundary conditions
  #1
New Member
 
Daniel Dezan
Join Date: Sep 2011
Posts: 1
Rep Power: 0
CFD_Fluent_User is on a distinguished road
Hi,

Firstly, I apologize because my English is not very well…rsrsrs…I am a Fluent software new user.

I have studied the effect of the dimples on thermal-hydraulic behavior at a plate-fin by using Fluent software. For this study, I need to divide the domain in inlet, outlet, symmetry and periodic. However, I have never run simulations with periodic and symmetry conditions.
I have prescribed constant wall temperature on tube surface, x-velocity at inlet and outflow as the boundary conditions. I have utilized extended regions at inlet and outlet. Is correct I use the symmetry boundary conditions in inlet and outlet regions?
I have used Tgrid to create the 3-D meshes and the periodic surface (it generates a "shadow surface" from periodic surface with the same characteristics, including number of elements, dimensions, etc.). I verified the mesh quality and no problems were reported by the software. The domain is one-half plate (symmetry condition) connected at a tube and two periodic boundary conditions positioned at one-half (upper and lower at Z-direction) of fin pitch (the periodic is parallel to entrance flow), as indicated on Fig. below (rsrs)

-------------------------------------- Periodic 1

-------------------------------------- Plate

-------------------------------------- Periodic 2


Doubt 2). In my case, the symmetry boundary condition does not report any result and Fluent does not allow that any information can be changed in its setup for this condition. What is happening?

Doubt 3). I have used "Specified mass flow" as periodic boundary condition. For example, if inlet mass flow is 0.2 kg/s, what the value which I have to setup on "Specified mass flow"? Also, what is the flow direction, in x, y and z, that I have to use for this case? I have used Z=1 and X=Y=0.

Last edited by CFD_Fluent_User; September 20, 2011 at 09:00. Reason: correction
CFD_Fluent_User is offline   Reply With Quote

Old   October 16, 2014, 03:18
Default
  #2
New Member
 
Musty
Join Date: Oct 2013
Posts: 8
Rep Power: 12
mustafa-uslu is on a distinguished road
http://www.cfd-online.com/Forums/flu...utorial-2.html

go to this page, helps me too much!
mustafa-uslu is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
symmetry boundary conditions in cfx lost.identity CFX 41 May 22, 2013 08:21
different conditions for multiple periodic zones CLINT_E FLUENT 0 April 19, 2010 14:23
[Urgent] Need help for defining boundary conditions Jingwei FLUENT 2 March 19, 2009 22:01
periodic boundary condition tucker FLUENT 3 May 23, 2005 07:56
How to define periodic boundary conditions at Flu Wang FLUENT 4 August 29, 2000 22:36


All times are GMT -4. The time now is 21:39.