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

Nodes, elements and faces

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 9, 2002, 05:19
Default Nodes, elements and faces
  #1
Michael
Guest
 
Posts: n/a
This might be a stupid question but I've tried to fully understand it for quite some time now with no luck. In CFX5, what is difference between nodes, elements and faces. For instance, take the following output as a case: Domain Name : main Total Number of Nodes = 55112, Total Number of Elements = 216311, Total Number of Tetrahedrons = 176323, Total Number of Prisms = 39866, Total Number of Pyramids = 122, Total Number of Faces = 17474.
  Reply With Quote

Old   October 9, 2002, 11:35
Default Re: Nodes, elements and faces
  #2
Olivier Macchion
Guest
 
Posts: n/a
Hi

If you go back to your ground course in fluid dynamics and the first allusion to discretisation of a fluid domain, you will see that you divide a fluid domain in small volumes that you approximate using tetrahedra in the case of an unstructured mesh like in cfx

the nodes are the points that define the tetrahedra

the prisms in cfx are the prisms generated in the inflation layers

the pyramids are generated sometimes at the interface between the prisms and the tetrahedra, but i'm not sure of this

and i would think that the faces are the ones that define your surface mesh

but you should chek this out

does anybody has a better explanation please ?

cheers

Olivier
  Reply With Quote

Old   October 10, 2002, 07:53
Default Re: Nodes, elements and faces
  #3
Bob
Guest
 
Posts: n/a
Try the help manual for a good explanation of all of the above questions. in CFX 5.5.1 the page is : 327 and is found under: CFX5 Solver, Mathematical Models and Solution Algorithms, Numerical Discretisation. Bob
  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
elements, nodes and faces Andy CFX 10 July 7, 2013 23:40
Mesh elements shape on faces Mohsin FLUENT 3 August 17, 2011 03:37
What is the sequence of nodes in a tetrahedral element rvacharya ANSYS Meshing & Geometry 0 February 3, 2011 07:52
uncovered faces and hanging elements found vmlxb6 ANSYS Meshing & Geometry 0 September 5, 2010 02:16
Problem with meshing long, thin faces in CFX Martin CFX 3 January 8, 2009 21:51


All times are GMT -4. The time now is 20:17.