CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > ANSYS Meshing & Geometry

[DesignModeler] Macro / Script for automatic geometry import

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 13, 2013, 05:10
Default Macro / Script for automatic geometry import
  #1
New Member
 
Join Date: Feb 2013
Posts: 7
Rep Power: 4
wasabi is on a distinguished road
Hello everybody,

First I want to say that I searched in the forum for something similar but I found nothing, so Im opening this topic.


Im performing an optimization in which the 3rd-party optimizer runs an external software for geometry generation that generates an .igs file, that, imported into DesignModeler, is the starting point for a parametric model, from where starts a complete CFD workflow.

Heres my problem:

this .igs file is already present inside the DesignModeler tree, and, even if it is updated at every optimization step (by optimizer-->geometry generation software), it is not automatically updated in DM (think that even if the file is missing the geometry keeps working, I get only a message saying that the original file is missing...).


So I tried to record a script from Workbench in File-->Scripting-->Start recording journal performing these actions:

Opening DM from geometry block --> go to the Import feature in the tree --> RMB "Edit selections" --> Giving the path of .igs file --> Generate --> exit DM --> save file.

But when I run this script workbench only opens DM and closes it, without doing all the import procedure.


Does somebody have any kind of hint for me?

Thanks in advance, best regards.
wasabi is offline   Reply With Quote

Old   June 14, 2013, 10:13
Default
  #2
Senior Member
 
PSYMN's Avatar
 
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,662
Blog Entries: 1
Rep Power: 35
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
I don't know what is wrong with DM (why it doesn't try to update), but generally speaking, IGES is a problem.

Each time you generate an IGES file, it generates new surface names without any consistency. It is a difficult starting point for any sort of parametric update.

Just about anything else would be better.
__________________
-----------------------------------------
Please help guide development at ANSYS by filling in these surveys

Public ANSYS ICEM CFD Users Survey

This second one is more general (Gambit, TGrid and ANSYS Meshing users welcome)...

CFD Online Users Survey
PSYMN is offline   Reply With Quote

Old   June 14, 2013, 11:24
Default
  #3
New Member
 
Join Date: Feb 2013
Posts: 7
Rep Power: 4
wasabi is on a distinguished road
First thanks for the answer.

Quote:
Originally Posted by PSYMN View Post
I don't know what is wrong with DM (why it doesn't try to update)
I even tried "manually" to change the imported file, change in WB a parameter (so he was obliged to refresh the DM component) and then I had a look in DM to see if the imported geometry was changed but it was still the old one. To change it, in the "Import" feature properties i found a feature "Refresh"(Yes/No) that if selected as Yes, gives me the chance to click on Generate and so the new geometry is loaded (please see screenshot attached). But this property has to be set manually every time, the simple Refresh of the DM component do not read the geometry file every time, thats what Im noticing.

By the way, with some help I set up a Python script to command WB operations and a JavaScript script to make DM loading the file, and right now Im performing some tests, but I have to wait for the results (finger crossed!).


Concerning the IGES file, thanks for the hint, I will consider a change of format (will STEP be fine?).

Thanks again!
Attached Images
File Type: jpg Screenshot-7.jpg (48.5 KB, 47 views)
wasabi is offline   Reply With Quote

Old   June 14, 2013, 14:13
Default
  #4
Senior Member
 
PSYMN's Avatar
 
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,662
Blog Entries: 1
Rep Power: 35
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
Step and IGES are similarly bad... ACIS, Parasolid, dwg and other formats are better because they persistently name their entities the same way between updates.
__________________
-----------------------------------------
Please help guide development at ANSYS by filling in these surveys

Public ANSYS ICEM CFD Users Survey

This second one is more general (Gambit, TGrid and ANSYS Meshing users welcome)...

CFD Online Users Survey
PSYMN is offline   Reply With Quote

Old   June 18, 2013, 07:59
Default
  #5
Member
 
Victor-S. Eberhart
Join Date: Oct 2011
Posts: 32
Rep Power: 5
vigges is on a distinguished road
wasabi,

would you mind sharing the code for both WB and DM operations? I've reached an dead end and maybe you can get me out of there

thanks,
vigges
vigges is offline   Reply With Quote

Old   June 20, 2013, 05:20
Default
  #6
New Member
 
Join Date: Feb 2013
Posts: 7
Rep Power: 4
wasabi is on a distinguished road
Quote:
Originally Posted by vigges View Post
wasabi,

would you mind sharing the code for both WB and DM operations? I've reached an dead end and maybe you can get me out of there

thanks,
vigges
I need firts to check if I can, I developed it in a project of the company Im working for.
wasabi is offline   Reply With Quote

Old   August 12, 2013, 19:12
Default
  #7
ICS
New Member
 
Join Date: Aug 2013
Posts: 7
Rep Power: 3
ICS is on a distinguished road
Im also facing problems importing geometries... I already generate parasolids, but it contains many bodies and when I change the geometry all of them become a separate part... I need to automaticaly form a new part with all the bodies in the geometry... how can I do it using script?
ICS is offline   Reply With Quote

Old   August 13, 2013, 03:45
Default
  #8
Senior Member
 
Matthias Vo
Join Date: Mar 2009
Location: Berlin, Germany
Posts: 446
Rep Power: 11
mvoss is on a distinguished road
Regarding the IGES import:
You cannot use the "journaling" for the DM. Wb is Phython, DM is JScript.
BUT: you can send JScript Commands to an DM-Container via the wb-journal.
JScript isnt supported but there is an overview in the documentation.

I was facing a very similar problem with ICEM and a parametric geometry in an EXTRA dm container on the wb-schematic. I solved the not-upto-date-geometry-error by including the standalone geometry container in the appropriate simulation container (CFX, FLUENT, ANSYS, etc.) . Since the geometry AND the whole downstream action (meshing, solving, post) are stuffed in ONE update call everything worked out. There is smth. strange about different containers on the wb-schematic calling the update for containers downstream in the workflow and also vice versa. Reported it to the support ( they gave the idea mentioned above).

Hope this helps..

Matthias

Last edited by mvoss; August 13, 2013 at 06:52.
mvoss is offline   Reply With Quote

Old   August 13, 2013, 06:57
Default
  #9
ICS
New Member
 
Join Date: Aug 2013
Posts: 7
Rep Power: 3
ICS is on a distinguished road
Thanks for your help!

I understand that I cannot use the "journaling" for the DM. But I can call a JScript from the wokbench journal... so what i'm trying to do is:

WB journal:

system1 = GetSystem(Name="FFF")
geometry1 = system1.GetContainer(ComponentName="Geometry")
geometry1.SetFile(FilePath="C:...........x_t")
geometry1.Edit()
script = open('C:...............js', 'r')
geometry1.SendCommand(Command=script.read())

This code changes the .x_t geometry, opens the DM and runs the JScript file... but how would it be the JScript code to select all bodies in the geometry and form a single part?
ICS is offline   Reply With Quote

Old   April 1, 2014, 19:05
Default
  #10
Senior Member
 
Join Date: Apr 2014
Location: Melbourne
Posts: 182
Rep Power: 3
Kapi is on a distinguished road
Hi ICS,

Quote:
Originally Posted by ICS View Post
but how would it be the JScript code to select all bodies in the geometry and form a single part?
there are few functions for all these things, you need to go inside codes to find these functions.
Anyway, what you can do is at the end of your "geometry.js" code, add this

var X = agb.FormNewPartFromAllBodies();
X.name = "Y";

this will create single part from all the bodies.
"Y" is th ename you want for the part which includes all bodies

Hope it helps
Cheers
KAPI
Kapi is offline   Reply With Quote

Old   April 2, 2014, 06:40
Default
  #11
ICS
New Member
 
Join Date: Aug 2013
Posts: 7
Rep Power: 3
ICS is on a distinguished road
Hi Kapi, thanks for your help.

I had already managed a solution, but I forgot to post here... this is how the code became:

system1 = GetSystem(Name="FFF")
geometry1 = system1.GetContainer(ComponentName="Geometry")
geometry1.Edit()
geometry1.SendCommand(Command="""ag.m.NewSession (1);
ag.gui.CreateImport("C:/....x_t");
agb.regen();
ag.gui.PickFilter(5, true);
ag.gui.SelectAll();
ag.m.FormBodyGroup();""")

It opens the DM, create a new session, import the new geometry file, select all bodies and form a new group.

In another thread I discussed a way to update the mesh and export the file: Mesh macro
ICS is offline   Reply With Quote

Old   April 9, 2014, 00:27
Default
  #12
Senior Member
 
Join Date: Apr 2014
Location: Melbourne
Posts: 182
Rep Power: 3
Kapi is on a distinguished road
Hi ICS,
this is alone of the ways to make part from bodies in WBJN file.

Quote:
Originally Posted by ICS View Post
agb.regen();
ag.gui.PickFilter(5, true);
ag.gui.SelectAll();
ag.m.FormBodyGroup();""")
what I posted above is for JS file where all your geometry code goes!
I checked mesh macro link as well, its good, quiet similar to geometry.

Keep up the good work!

Cheers
KAPI
Kapi is offline   Reply With Quote

Old   November 18, 2014, 13:05
Default
  #13
maw
New Member
 
Mark
Join Date: Dec 2011
Posts: 4
Rep Power: 5
maw is on a distinguished road
Do you know a method of choosing only a few bodies as opposed to all?
maw is offline   Reply With Quote

Old   November 24, 2014, 01:07
Default
  #14
Senior Member
 
Join Date: Apr 2014
Location: Melbourne
Posts: 182
Rep Power: 3
Kapi is on a distinguished road
Hi Maw,

In your JS script you can either do Named selection of bodies and use them how you want or other option is to pick them from top to bottom, something like this

Code:
body1 = ag.fm.Body(ag.fm.BodyCount-1);
and then rename them and use them in your code.

Hope this helps.

Cheers
Kapi
Kapi is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[ICEM] How to Import a DWG Geometry to ICEM? qzsky ANSYS Meshing & Geometry 6 June 11, 2013 06:43
[DesignModeler] problem with import geometry from catia pavilion ANSYS Meshing & Geometry 1 November 23, 2012 11:45
[ICEM] Problem in geometry creation by script lavoz ANSYS Meshing & Geometry 4 March 12, 2010 11:56
import catia geometry in icem v10 anorky Main CFD Forum 4 December 26, 2009 02:15
creating geometry using "Script files" in ICEMCFD jaber Main CFD Forum 1 November 11, 2007 10:28


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