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

Button 'Generate Mesh' doesn't work

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 7, 2004, 09:16
Default Button 'Generate Mesh' doesn't work
  #1
Julie Polyakh
Guest
 
Posts: n/a
Hi,

I've created a new block and tried to mesh it from the 'Mesh' tab of the 'Create block structured grids' panel. I've set the number of cells for two block edges and pressed the button 'Generate Mesh'. In the output window appeared the following message:

"Ececute blocks 95 to 95 by 1

Error - Your increments are not reasonable

Error meshing block 95 - Block not meshed

No blocks meshed"

What increments is it talking about and what could be so unreasonable about them?

Thanks in advance,

Julie
  Reply With Quote

Old   January 7, 2004, 10:34
Default Re: Button 'Generate Mesh' doesn't work
  #2
steve
Guest
 
Posts: n/a
In a block you have 3 directions. Lets say you put 10 cells in direction 1. Then you must increment the vertices in direction 2 by at least 11. If you specify/force the vertex increment to be less than 11, then they are not reasonable. If you did not specify the increments yourself, maybe you need to give the block the number of cells on 3 edges (ie all 3 directions).
  Reply With Quote

Old   January 7, 2004, 11:07
Default Re: Button 'Generate Mesh' doesn't work
  #3
Julie Polyakh
Guest
 
Posts: n/a
I'm sorry, can you explain that in some other way. I just don't get what do you mean.

Julie
  Reply With Quote

Old   January 7, 2004, 19:15
Default Re: Button 'Generate Mesh' doesn't work
  #4
steve
Guest
 
Posts: n/a
A block has 3 directions, I, J, K. You specify the number of cells in each direction - say 10 for I, 5 for J, 2 for K. That means you have 10 cells in the I direction and 11 vertices and so on for J (5 cells, 6 vertices) K (2 cells, 3 vertices). So if you started numbering from 1, the first I row of vertices would be 1-11, the next 12-22, then 23-33...

What the program is complaining about is that it thinks you are trying to force a numbering system that is impossible. If the first row of vertices is numbered 1-11, then the second row can't possibly start at 5. The increment MUST be 11 or greater (make 1 block, set the edges at 10,5,2 turn on vertex plotting and see how it numbers).

I just built one myself and it works exactly as described. What I don't know is how you have managed this, but it is likely that you have used the BLKFACTOR command incorrectly (or the gui has messed up). Type HELP BLKF for more information and look at any of the tutorials that use blocks. Look at your echo file to see what the GUI has used for the blkf command.
  Reply With Quote

Reply

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
Use Gambit to generate 3D mesh ! ! ! yuanye FLUENT 0 June 3, 2008 23:03
Need someone to generate mesh RA FLUENT 7 May 4, 2007 12:36
generate different mesh in CFX_MESH Eric CFX 0 June 23, 2006 10:09
[OpenFOAM] HI all I cant find display button in paraview when i execute cavity tutorial there is only parameter button in the paraview chan ParaView 2 February 13, 2006 08:37
How 2 generate combined mesh? bogesz CFX 0 April 7, 2004 13:42


All times are GMT -4. The time now is 06:01.