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

copy mesh settings to new case with slightly different geometry

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 8, 2018, 10:55
Default copy mesh settings to new case with slightly different geometry
  #1
New Member
 
Join Date: May 2015
Posts: 19
Rep Power: 11
Katha is on a distinguished road
Hello,

my question is regarding pointwise:

Is it possible, to somehow save the mesh settings (Delta s, growth, etc) and replace the database so that a slightly changed Version of the same geometry may be meshed with the exact same resolution?

e.g.: I have a mesh ready for a simple symmetric tee pipe with equally sized connections. Now lets assume I had a very similar geometry, again a tee, but this time the connections are, say, not orthogonal to each other.

What is the best way to quickly mesh the new database using the exact same mesh Settings as for the previous case.


FYI: I migrated from Centaur, where the mesh properties where assigned to Groups that in turn contained sets of connectors. In that way it was very simple to delete the old database, load a new one and assign it to the various groups, depending on which mesh settings they were supposed to inherit.


Thanks for any suggestions.

Regards, K
Katha is offline   Reply With Quote

Old   August 9, 2018, 10:06
Default
  #2
New Member
 
Join Date: May 2018
Posts: 19
Rep Power: 8
lejonetfrannorden is on a distinguished road
Hello Katha,

I am not a Pointwise expert but I think you could write a small script for that. IN order to do that you can use journaling. Under Script menu, click on start Begin Journaling. After you perform some operations you can use those in Journal to write the script you need.

Regards,
Lejonet
lejonetfrannorden is offline   Reply With Quote

Old   August 9, 2018, 12:10
Default
  #3
New Member
 
Join Date: May 2015
Posts: 19
Rep Power: 11
Katha is on a distinguished road
Hello Lejonet,

thx for your quick reply. I did consider scripting, but have not used it in pointwise yet.

Afaik, PW journaling references the connectors by their place in the list of all connectors, not by their name. Also, when I introduce the new database, the name conventions might not be the same as for the earlier one and the number of the connectors might change. The applications I am targeting are large databases, out of which the "majority" of the geometry stays the same. Only small sections change, and I want to find a way of making pointwise use the previous mesh settings, and lets me set new once for the changed database, while assigning the old settings to the unchanged parts of the database Hence, I imagine it will be difficult to use journaling.
Do let me know, if I am missing the obvious way of doing it.

Regards,
K
Katha is offline   Reply With Quote

Old   August 9, 2018, 12:12
Default
  #4
New Member
 
Join Date: May 2015
Posts: 19
Rep Power: 11
Katha is on a distinguished road
Hello Lejonet,

thx for your quick reply. I did consider journaling, but have not used it in pointwise yet.

Afaik, PW journaling references the connectors by their place in the list of all connectors, not by their name. Also, when I introduce the new database, the name conventions might not be the same as for the earlier one and the number of the connectors might change. The applications I am targeting are large databases, out of which the "majority" of the geometry stays the same. Only small sections change, and I want to find a way of making pointwise use the previous mesh settings, and lets me set new once for the changed database, while assigning the old settings to the unchanged parts of the database Hence, I imagine it will be difficult to use journaling.
Do let me know, if I am missing the obvious way of doing it.

Regards,
K
Katha is offline   Reply With Quote

Old   August 9, 2018, 12:41
Default
  #5
New Member
 
Join Date: May 2018
Posts: 19
Rep Power: 8
lejonetfrannorden is on a distinguished road
Hello Katha,

As I have pointed out this is the best I could have thought. I believe that you can still use it, however it would be computationally expensive due to changing and loading the majority of the same database. Sorry that I cannot help you further. Please post here if you come up with a solution!

Regards,
Lejonet
lejonetfrannorden is offline   Reply With Quote

Old   August 9, 2018, 12:48
Default
  #6
New Member
 
Join Date: May 2015
Posts: 19
Rep Power: 11
Katha is on a distinguished road
sure, thank you.
Katha is offline   Reply With Quote

Old   August 9, 2018, 20:13
Default
  #7
Senior Member
 
David Garlisch
Join Date: Jan 2013
Location: Fidelity Pointwise, Cadence Design Systems (Fort Worth, Texas Office)
Posts: 307
Rep Power: 14
dgarlisch is on a distinguished road
This is possible but it can be fragile.

The database entities on which the grid entities are projected must have the same "topology" for the auto projection to work as expected.

By topology I mean same number DB ents with the same names NAMES. For example, if your grid is constrained to a six-face solid, you cannot bring in a seven-face solid.

If the topology is not the same, you will need to manually re-project (or script) the database doms and cons to the "similar" database ents.

For further help, please call Pointwise support.

See:
Save time by only remeshing the parts of your geometry model that change.

Saving Grid and Database Entities
dgarlisch is offline   Reply With Quote

Old   August 10, 2018, 05:43
Default
  #8
New Member
 
Join Date: May 2015
Posts: 19
Rep Power: 11
Katha is on a distinguished road
ok, thank u david.
Katha is offline   Reply With Quote

Reply

Tags
database change, geometry change, mesh settings, parameter study


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
[DesignModeler] DesignModeler Scripting: How to get Full Command Access ANT ANSYS Meshing & Geometry 53 February 16, 2020 16:13
[snappyHexMesh] problems generating clean mesh Christian_tt OpenFOAM Meshing & Mesh Conversion 2 June 20, 2019 06:39
3D Hybrid Mesh Errors DarrenC ANSYS Meshing & Geometry 11 August 5, 2013 07:42
[Gmsh] 2D Mesh Generation Tutorial for GMSH aeroslacker OpenFOAM Meshing & Mesh Conversion 12 January 19, 2012 04:52
unstructured vs. structured grids Frank Muldoon Main CFD Forum 1 January 5, 1999 11:09


All times are GMT -4. The time now is 21:48.