CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Special Topics > Mesh Generation & Pre-Processing

Have you ever seen this FEM mesh format?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 12, 2015, 12:47
Default Have you ever seen this FEM mesh format?
  #1
New Member
 
Hahahahaha
Join Date: Dec 2015
Posts: 2
Rep Power: 0
lzk12520 is on a distinguished road
Below is a mesh file for a non-commercial FEM 2D NS programme. I was wondering if this format looks familiar to you? I am trying to figure out which commercial software (Ansys?) can read in this format of data, so that I can adjust the mesh.

If it is not possible I may have to use Matlab to convert it to Ansys or Gmsh format.

It is my first post. Thanks in advance guys! Appreciate any suggestion!

============================================

MESH.TXT


4 2
136711 136376 672
0.353553390974006 -2.35355339097401
0.355827191946658 -2.35537026691292
0.358237420950116 -2.35729615538062
0.360792263693782 -2.35933759715638
……..
4 1 54 55 2
4 2 55 56 3
4 3 56 57 4
4 4 57 58 5
4 5 58 59 6
4 6 59 60 7
4 7 60 61 8
4 8 61 62 9
4 9 62 63 10
4 10 63 64 11
4 11 64 65 12
4 12 65 66 13
4 13 66 67 14
4 14 67 68 15
4 15 68 69 16
4 16 69 70 17
4 17 70 71 18
4 18 71 72 19
4 19 72 73 20
…………..
2 3 1 54
2 3 54 107
2 3 107 160
2 3 160 213
2 3 213 266
2 3 266 319
2 3 319 372
2 3 372 425
2 3 425 478

First line must be “4 2”
Second line are Node number, element number and boundary line number
x- and y-coordinates of all the FEM nodes
Node number for each elements. There is a number “4” in front of each line. This “4” means that this is a four-node element.
The line like 2 3 1 54
The first number has to be 2, means 2-node line boundary
The meaning of the second number: 1=inlet boundary; 2=outlet boundary; 3=smooth wall surface; 4=symmetric boundary
The last two numbers are the Node IDs of the boundary (at the two end points)

========================================

FORCE_PARA.TXT (only part of the file)

384
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1
10 1
11 1
12 1
13 1
…………..
372 2
373 2
374 2
375 2
376 2
377 2
378 2
379 2
380 2
381 2
382 2
383 2
384 2
……..


The first line is the total number of the boundary elements that are on the surfaces of the structures.
From the second line
First number is the boundary ID, corresponding to the boundary element ID in “MESH.TXT”. The second number is the structure ID. For example, the boundary boundary 1 to 13 belong to cylinder 1 and the boundary 372 to 384 belong to cylinder 2.
lzk12520 is offline   Reply With Quote

Reply

Tags
fem, mesh

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
[ICEM] Generating Mesh for STL Car in Windtunnel Simulation tommymoose ANSYS Meshing & Geometry 48 April 15, 2013 05:24
most common mesh format. zampa Main CFD Forum 6 October 17, 2011 05:10
[snappyHexMesh] external flow with snappyHexMesh chelvistero OpenFOAM Meshing & Mesh Conversion 11 January 15, 2010 20:43
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 12:55
Icemcfd 11: Loss of mesh from surface mesh option? Joe CFX 2 March 26, 2007 19:10


All times are GMT -4. The time now is 23:17.