CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > CFX

Stage Interface errors & requirements

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 16, 2013, 02:36
Default Stage Interface errors & requirements
  #1
New Member
 
Jens H.
Join Date: Mar 2013
Posts: 3
Rep Power: 4
Teradil is on a distinguished road
Hello everybody,

first: Thank you very much for this forum and the FAQ! Helped me a lot!

But now i have a problem and don't find the problem..

I want to calculate a cavity chamber as rotating domain with a inflow from a non-rotating domain. So i modeled the two domains, the chamber and the inflow, and connected them with a stage interface. The chamber has a 120 symmetry and i modeled the inflow as a 10 part.
The calculation is always hardly diverging at the stage interface. I can bring it to converge if i use a frozen rotor. But surely then i only have a local inflow.

So my questions are:

1) Are there special requirements for the axial and circumferential velocity (for stage interfaces)? Because i only have a very small axial flow through the interface compared to the circumferential velocity..

2) I found some local backflows over the interface.. How stable is a stage interface with this kind of initial problems?


I hope you can give me some advice from your experience with the stage interfaces about its stability and special requirements..

Thanks a lot
Teradil is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Error finding variable "THERMX" sunilpatil CFX 8 April 26, 2013 07:00
Building OpenFOAM1.7.0 from source ata OpenFOAM Installation 42 May 14, 2012 20:48
Upgraded from Karmic Koala 9.10 to Lucid Lynx10.04.3 bookie56 OpenFOAM Installation 8 August 13, 2011 04:03
Could anybody help me see this error and give help liugx212 OpenFOAM Running, Solving & CFD 3 January 4, 2006 19:07


All times are GMT -4. The time now is 14:22.