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

Difference b/t rotating wall and rotating domain?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 20, 2007, 02:22
Default Difference b/t rotating wall and rotating domain?
  #1
Juno Kim
Guest
 
Posts: n/a
Here is a confusing thing in simulating a pump. In general a rotating domain and a stationary domain are adopted for a pump simulaiton in CFX. I did it like the way. In stead of using the roating domain, could it be possible that the rotating blades and hub are set up rotating wall? Are there any difference?

Thanks in advance for your help.
  Reply With Quote

Old   February 20, 2007, 11:03
Default Re: Difference b/t rotating wall and rotating doma
  #2
Bian
Guest
 
Posts: n/a
If you are not sure of the difference, you could try and see what would happen.

In a rotating domain, the fluid is subject to centrifugal force and the flow could be steady state in the rotating frame.

In a stationary domain, if you simulate the flow as transient with moving wall (and moving mesh), I assume you could get the same result. But, would the flow be steady state if you only set moving walls? Would the next position of the wall affect current flow field?
  Reply With Quote

Old   February 20, 2007, 21:08
Default Thanks for your kind answer. (No message) *NM*
  #3
Juno Kim
Guest
 
Posts: n/a
  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
CFX domain comparison Kiat110616 CFX 4 April 3, 2011 22:43
Difference between domain motion and rotating wall 100tinela CFX 6 January 31, 2011 17:53
Rotating wall transient signal in CFX tiguiblais CFX 0 April 23, 2010 14:11
transient simulation of a rotating rectangle icesniffer CFX 1 August 8, 2009 07:25
Counter rotating wall for rotating domain melvin CFX 0 February 4, 2008 05:51


All times are GMT -4. The time now is 05:25.