[ANSYS Meshing] meshing a fluid/solid what's the best format to import the geometry

zytra · October 29, 2014, 22:47

Hi
I've got a geometry composed a solid and 2 fluids.
I'm experiencing with different size geometries and once in a while I would have problems generating a (conformal?) mesh - well it does generate but can't be exported to fluent.

So far the best technique has been to export my SolidWorks assembly (3 parts) into a STEP file which I import in workbench.

DesignModeler imports 3 bodies.

It doesn't work all on the time though.

What are you guys doing to prevent issues with improper mesh?

Thanks
Steve

amin.z · October 30, 2014, 11:47

Hey
What is your problem exactly? CAD format for import to ANSYS? If you use solidworks, you can import directly with sldprt format to ansys

zytra · October 30, 2014, 20:38

Thanks for the response, Amin

I know I can import many different format including native SW files.

I noticed that depending on the file format that I am using, the interface surfaces will sometimes cause overlapping issues when exporting the mesh through workbench. And I also noticed that sometimes Fluent would identify interfaces, creating mating shadow zones, sometimes it won't.

I have had the best results importing STEP files and creating a multibody part from the bodies in DesignModeler.

However it still doesn't always work so I am wondering what you guys are doing when working with multiple 3D solid/fluids.

Thanks
Steve

amin.z · October 31, 2014, 02:06

I've experienced the same problem
I suggest you:
1. Import your CAD as sldprt format! sometimes STEP/STP format gives small changes in model dimensions and cause overlapping and...
2. If it's possible, use boolean for ensure that interfaces and... be OK!
3. sometimes fluent doesn't know mesh interfaces! so you should use connection in ansys meshing for model interfaces!

October 29, 2014, 22:47	meshing a fluid/solid what's the best format to import the geometry	#1
zytra New Member steve Join Date: Oct 2014 Posts: 9 Rep Power: 12	Hi I've got a geometry composed a solid and 2 fluids. I'm experiencing with different size geometries and once in a while I would have problems generating a (conformal?) mesh - well it does generate but can't be exported to fluent. So far the best technique has been to export my SolidWorks assembly (3 parts) into a STEP file which I import in workbench. DesignModeler imports 3 bodies. It doesn't work all on the time though. What are you guys doing to prevent issues with improper mesh? Thanks Steve

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[GAMBIT] Need advice on meshing technique to be used for this geometry	ankur_kr	ANSYS Meshing & Geometry	12	March 24, 2014 01:31
[ICEM] Meshing adjacent wall geometry and simple ICEM questions	everdimension	ANSYS Meshing & Geometry	25	June 20, 2012 05:25
[ICEM] Best way to import geometry ICEM	Cottbus	ANSYS Meshing & Geometry	4	June 12, 2012 10:42
[DesignModeler] Import external geometry problem	Houman	ANSYS Meshing & Geometry	0	May 16, 2012 05:24
[Gmsh] Problem meshing an imported geometry	Alicia	OpenFOAM Meshing & Mesh Conversion	0	March 30, 2010 05:53

October 30, 2014, 11:47		#2
amin.z Senior Member Amin Join Date: Oct 2013 Location: Germany Posts: 397 Rep Power: 15	Hey What is your problem exactly? CAD format for import to ANSYS? If you use solidworks, you can import directly with sldprt format to ansys

October 30, 2014, 20:38		#3
zytra New Member steve Join Date: Oct 2014 Posts: 9 Rep Power: 12	Thanks for the response, Amin I know I can import many different format including native SW files. I noticed that depending on the file format that I am using, the interface surfaces will sometimes cause overlapping issues when exporting the mesh through workbench. And I also noticed that sometimes Fluent would identify interfaces, creating mating shadow zones, sometimes it won't. I have had the best results importing STEP files and creating a multibody part from the bodies in DesignModeler. However it still doesn't always work so I am wondering what you guys are doing when working with multiple 3D solid/fluids. Thanks Steve

October 31, 2014, 02:06		#4
amin.z Senior Member Amin Join Date: Oct 2013 Location: Germany Posts: 397 Rep Power: 15	I've experienced the same problem I suggest you: 1. Import your CAD as sldprt format! sometimes STEP/STP format gives small changes in model dimensions and cause overlapping and... 2. If it's possible, use boolean for ensure that interfaces and... be OK! 3. sometimes fluent doesn't know mesh interfaces! so you should use connection in ansys meshing for model interfaces!