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-   -   2 Disconnected Cell Groups? - please help (http://www.cfd-online.com/Forums/cd-adapco/54426-2-disconnected-cell-groups-please-help.html)

Ted Crilly March 9, 2005 20:59

2 Disconnected Cell Groups? - please help
 
hi star users,

i have a large model that when checked in the Nav Centre connectivity check option, it reports that i have 2 disconnected groups.

the error is:

Error - Cells in the range appear to be in 2 disconnected groups

Group 1 No. of cells 1643416

Group 2 No. of cells 3

Group 1 is the main fluid domain

group 2 ? i dont know what this is?

Is there a way i can isolate Group 2 and delete the 3 cells, so that i do not get the connectivity cell errors?

3 dodgy cells deleted from 1.6million i am not too worried about the consequences,

any advice how to do this

thanks in advance

ted

Tom March 9, 2005 21:28

Re: 2 Disconnected Cell Groups? - please help
 
If you do a cell count it will tell you which group the cells are in. Then do a cset,newset,type,XX where XX= cell goup. Cplot then to see them. It could be as easy as doing a vertex megre to join them up.

Tom

Ted Crilly March 9, 2005 21:40

Re: 2 Disconnected Cell Groups? - please help
 
thanks tom,

how do i do a cell count?

in the cell list, it lists the cell number vertex etc and then the has the cell table number but i cannot see the group anywhere?

cheers

ted

Tom March 9, 2005 23:29

Re: 2 Disconnected Cell Groups? - please help
 
I am sorry, I did not use specific language. The cell table number is the group, or the cell type. Tom

Oliver Lauer March 10, 2005 06:19

Re: 2 Disconnected Cell Groups? - please help
 
Normally the the cell group numbers are written into post register 4. Therefore it should be possible to use

cset news prange 4 2 2

to select the disconnected cells. You also could use a contour plot to look on the cells.

Good luck.


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