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-   -   [ICEM] Rotational periodic vertices change their location automatically (http://www.cfd-online.com/Forums/ansys-meshing/127894-rotational-periodic-vertices-change-their-location-automatically.html)

swm December 25, 2013 03:45

Rotational periodic vertices change their location automatically
 
3 Attachment(s)
I am new in ICEM. When I try to mesh the axial compressor' blade, I find a very confusing problem that when I reopen the project, the location of the rotational periodic vertices i have set last time are changed! That is to say, even i move them to the right place and save the project again and again, when i close the project and reopen it, the location is not the right one...I don't know why.
[What I mean is: Firstly, I set the rotational angle as X degrees, and at the first time, I put the two periodic vertices at the right location, but when I reopen the project, the periodic vertices have "moved" by themselves, and the angle is changed to Y degrees(X!=Y, because I find I can not move both of them to the original right locaion).]
Attachment 27551

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raghav December 25, 2013 04:01

One reason maybe you have associated vertices to the one set points or curve and u are moving it to another location and saving it.
And as soon as you reopen, it will find the associated points/ curves and gets aligned to it.

If this is the case, dissociate the vertices u want to move->move it->associate it to the new set of points/ curve.

Regards,
Raghav

swm December 25, 2013 04:09

Quote:

Originally Posted by raghav (Post 467590)
One reason maybe you have associated vertices to the one set points or curve and u are moving it to another location and saving it.
And as soon as you reopen, it will find the associated points/ curves and gets aligned to it.

If this is the case, dissociate the vertices u want to move->move it->associate it to the new set of points/ curve.

Regards,
Raghav


I have checked it and ruled out this possibility. Actually, I associate the edge to the curve, and move the vertics onto the curves.

Far December 25, 2013 04:16

can you share tin and blk files?

swm December 25, 2013 04:49

I don't know why I can't upload these files correctly, can I send them by email to u?(turboenginner@gmail.com)

Far December 25, 2013 05:56

yes you can send to me at that email id. But you can also upload here in .zip format or past a link for the dropbox folder/file etc

swm December 26, 2013 11:43

Yesterday's description has some problems. Redescription: Firstly, I set the rotational angle as X degrees, and at the first time, I put the two periodic vertices at the right location, but when I reopen the project, the periodic vertices have "moved" by themselves, and the angle is changed to Y degrees(X!=Y, because I find I can not move both of them to the original right locaion). I sent files to you yesterday, you can reset the rotation angle as 8.18, and do what i said above, the phenomenon will reappear. Thank you for your patience and help.


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