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

opening BC

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 8, 2004, 04:29
Default opening BC
  #1
Ng Khai Ching
Guest
 
Posts: n/a
Dear CFD users/programmer:

I have some problem in understanding the following statement in CFX user manual.

"If the flow is entering the domain the value is taken to be Total Pressure, from which static pressure is calculated".

My question is: How to calculate pressure from it? From my understanding, we have to fix static temperature as well as the flow direction in opening BC.

Pls advise. tq.

khai ching
  Reply With Quote

Old   October 8, 2004, 15:34
Default Re: opening BC
  #2
NymphadoraTonks
Guest
 
Posts: n/a
Revise the definition of total pressure ... it contains a static as well as a dynamic component. The dynamic component is velocity dependant.

Dont bother trying to get meaningfull data out of a CFD package unless you have a solid grasp of the undelying physical (and prefrably numerical) theory.
  Reply With Quote

Reply


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
opening temperature for the opening BC sujay CFX 5 June 2, 2010 08:04
Opening Vs outlet BCs and temporary wall issue Sam CFX 0 January 16, 2008 18:59
Help setting up pressure function across opening Jenny CFX 3 October 18, 2007 00:16
Additional Variables- in the Opening BC. Houman CFX 0 October 2, 2006 08:09
Additional Variables at the Opening Boundary Houman CFX 0 August 22, 2006 12:27


All times are GMT -4. The time now is 15:01.