[GAMBIT] problem with importing geometry in Gambit

bahar · May 9, 2012, 04:10

Hello everybody,

I am new to Gambit and I would like to import a 3D drawing from Solidworks into Gambit, I tried ACIS,Parasolid and STEP format files, but nothing could be shown in Gambit!
what would be the problem?

Thank you in advance,

bahar.

-mAx- · May 9, 2012, 05:02

any error or warning in the transcript window?

bahar · May 9, 2012, 11:33

Actually not!
I've heard somewhat about cleaning up the solid file,what does it mean? may it be related to my problem?

Thanks for your attention,

bahar.

-mAx- · May 10, 2012, 01:21

Then you should get any info like:
Imported: 1 ACIS BODY(s), 0 FACE(s), 0 EDGE(s), 0 VERTEX(es)
Do yo get 0 body, 0 face and 0 vertex?

Once you imported your geometry, try to delete any vertex, edge, surface or volume.
By clicking on the fat black arrow (right next to the yellow rectangle), you will get the list of entities which are in your session.

bahar · May 10, 2012, 07:37

Dear mAx, thanks for your attention!

I've found such a command by clicking on the fat black arrow: ''save file is from a later version of Acis''
I'm working with Solid 2012 and using Gambit 2.3.16. what should I do?

bahar.

adambarfi · May 10, 2012, 07:47

Hi bahar,
is your license OK? I have a same problem with .CATPART. I found that my license is not perfect.

dearali911 · May 10, 2012, 13:40

hi every one
i also have this kind of problem.gambit actually fails to import any type (igs,acis,etc) file.showing license error. sometime 0body.0 vortex,0 alla balla

bahar · May 12, 2012, 11:02

Hi everyone,
adambarfi, It seems that the licence works correctly. I received such a message in Gambit: ''save file is from a later version of Acis''

dearali911, I do not receive this message. Maybe adambarfi could help you!

-mAx- · May 14, 2012, 01:06

So I imported your step file, and I get a cylinder with ø1.73 and height 1

bahar · May 14, 2012, 08:14

Wow! Thank for good news!

Which version of Gambit do you use mAx?

-mAx- · May 14, 2012, 08:21

2.4.6
But if you wanted to import such a simple geometry... you can build it direct in gambit, by creating a cylinder

bahar · May 16, 2012, 02:39

Thank you dear mAx

I finally imported the geometry in Gambit.
But there's another question! In the ACIS file only bodies are known for Gambit.
What is the best way to create faces, edges and etc? Is it accurate using points?

-mAx- · May 16, 2012, 02:44

it depends on what you want to build
You can build simple volumes directly (cylinder, sphere, torus, rectangle, etc...)

bahar · May 16, 2012, 05:36

My final geometry is a helical blade, So it is not easy to create in Gambit.
What should I do?

-mAx- · May 16, 2012, 05:38

post a picture of what you want to build in gambit
Else build it in a cad package and export the final volume as STEP file in gambit

bahar · May 16, 2012, 05:55

It is a vertical axis wind turbine, I understand that Gambit has detected faces,edges and etc by getting information.
The next question is about how to mesh it?
Thank you dear mAx for your helps

-mAx- · May 16, 2012, 05:59

it sounds you have already build it in gambit, don't you?
is it your final geometry you want to compute? I mean you need fluid flowing around the blades?

bahar · May 16, 2012, 06:13

Yes, that's right.
I need flow around blades and I do not know how to mesh such a complex geometry!

-mAx- · May 16, 2012, 07:24

do you have surfaces or volumes topology?
In your case you only need to create your outer domain (lets say a box), and then you substract the box with your blades.
The result will be the box with blades as hollow.

masoodina · May 18, 2012, 00:57

hi bahar . i had the same problems months ago. u d better export the file in sldworx as igs file . then import igs file in gambit activating naitve choice .
now you have the faces ready . just convert the faces to real faces and create volumes using the faces .

according to your geometry you , i think you cant have a very good mesh in gambit . maybe use quad/tri mesh for faces then tgrid mesh for volumes .

May 9, 2012, 04:10	problem with importing geometry in Gambit	#1
bahar Member Bahar Join Date: May 2012 Posts: 46 Rep Power: 13	Hello everybody, I am new to Gambit and I would like to import a 3D drawing from Solidworks into Gambit, I tried ACIS,Parasolid and STEP format files, but nothing could be shown in Gambit! what would be the problem? Thank you in advance, bahar.

May 9, 2012, 05:02		#2
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	any error or warning in the transcript window? __________________ In memory of my friend Hervé: CFD engineer & freerider

May 9, 2012, 11:33	Re:problem with importing geometry in Gambit	#3
bahar Member Bahar Join Date: May 2012 Posts: 46 Rep Power: 13	Actually not! I've heard somewhat about cleaning up the solid file,what does it mean? may it be related to my problem? Thanks for your attention, bahar.

May 10, 2012, 01:21		#4
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	Then you should get any info like: Imported: 1 ACIS BODY(s), 0 FACE(s), 0 EDGE(s), 0 VERTEX(es) Do yo get 0 body, 0 face and 0 vertex? Once you imported your geometry, try to delete any vertex, edge, surface or volume. By clicking on the fat black arrow (right next to the yellow rectangle), you will get the list of entities which are in your session. __________________ In memory of my friend Hervé: CFD engineer & freerider

May 14, 2012, 01:06		#9
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	So I imported your step file, and I get a cylinder with ø1.73 and height 1 __________________ In memory of my friend Hervé: CFD engineer & freerider

May 10, 2012, 07:37		#5
bahar Member Bahar Join Date: May 2012 Posts: 46 Rep Power: 13	Dear mAx, thanks for your attention! I've found such a command by clicking on the fat black arrow: ''save file is from a later version of Acis'' I'm working with Solid 2012 and using Gambit 2.3.16. what should I do? bahar.

May 10, 2012, 07:47		#6
adambarfi Senior Member Mostafa Mahmoudi Join Date: Jan 2012 Posts: 322 Rep Power: 15	Hi bahar, is your license OK? I have a same problem with .CATPART. I found that my license is not perfect.

May 10, 2012, 13:40		#7
dearali911 New Member ali Join Date: May 2012 Posts: 5 Rep Power: 13	hi every one i also have this kind of problem.gambit actually fails to import any type (igs,acis,etc) file.showing license error. sometime 0body.0 vortex,0 alla balla

May 12, 2012, 11:02		#8
bahar Member Bahar Join Date: May 2012 Posts: 46 Rep Power: 13	Hi everyone, adambarfi, It seems that the licence works correctly. I received such a message in Gambit: ''save file is from a later version of Acis'' dearali911, I do not receive this message. Maybe adambarfi could help you!

May 14, 2012, 08:14		#10
bahar Member Bahar Join Date: May 2012 Posts: 46 Rep Power: 13	Wow! Thank for good news! Which version of Gambit do you use mAx?

May 14, 2012, 08:21		#11
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	2.4.6 But if you wanted to import such a simple geometry... you can build it direct in gambit, by creating a cylinder __________________ In memory of my friend Hervé: CFD engineer & freerider

May 16, 2012, 02:39		#12
bahar Member Bahar Join Date: May 2012 Posts: 46 Rep Power: 13	Thank you dear mAx I finally imported the geometry in Gambit. But there's another question! In the ACIS file only bodies are known for Gambit. What is the best way to create faces, edges and etc? Is it accurate using points?

May 16, 2012, 02:44		#13
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	it depends on what you want to build You can build simple volumes directly (cylinder, sphere, torus, rectangle, etc...) bahar likes this. __________________ In memory of my friend Hervé: CFD engineer & freerider

May 16, 2012, 05:36		#14
bahar Member Bahar Join Date: May 2012 Posts: 46 Rep Power: 13	My final geometry is a helical blade, So it is not easy to create in Gambit. What should I do?

May 16, 2012, 05:38		#15
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	post a picture of what you want to build in gambit Else build it in a cad package and export the final volume as STEP file in gambit __________________ In memory of my friend Hervé: CFD engineer & freerider

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May 16, 2012, 05:59		#17
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	it sounds you have already build it in gambit, don't you? is it your final geometry you want to compute? I mean you need fluid flowing around the blades? __________________ In memory of my friend Hervé: CFD engineer & freerider

May 16, 2012, 06:13		#18
bahar Member Bahar Join Date: May 2012 Posts: 46 Rep Power: 13	Yes, that's right. I need flow around blades and I do not know how to mesh such a complex geometry!

May 16, 2012, 07:24		#19
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	do you have surfaces or volumes topology? In your case you only need to create your outer domain (lets say a box), and then you substract the box with your blades. The result will be the box with blades as hollow. __________________ In memory of my friend Hervé: CFD engineer & freerider

May 18, 2012, 00:57		#20
masoodina New Member masood Join Date: May 2012 Posts: 18 Rep Power: 13	hi bahar . i had the same problems months ago. u d better export the file in sldworx as igs file . then import igs file in gambit activating naitve choice . now you have the faces ready . just convert the faces to real faces and create volumes using the faces . according to your geometry you , i think you cant have a very good mesh in gambit . maybe use quad/tri mesh for faces then tgrid mesh for volumes .