CFD Online Discussion Forums

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   CFX (https://www.cfd-online.com/Forums/cfx/)
-   -   Physical size of geometry in DesignModeler (https://www.cfd-online.com/Forums/cfx/21726-physical-size-geometry-designmodeler.html)

Michael Rasmussen October 21, 2005 06:16

Physical size of geometry in DesignModeler
 
Hi

I'm trying to import a IGES solid (generated in Rhino) into DesignModeler 9.0, but runs into the problem that if the physical size is above 1000 m, then DesignModeler will not import correctly (creates surfaces instead of solids). If I scale it down to say 900 meters it will import without problems.

Did the programmes think that no geometry is above 1000 m. ? And why can't you select km or miles as units ?

I tried to play around with tolerances without any luck. Also I have tried to scale it up within DesignModeler. However, when it goes above 1000 m. the program makes an error say that the model exseeds DesignModeler size limith

Is there anybody who knows a workaround ?

Best regards

Michael


henpeckedman October 21, 2005 12:05

Re: Physical size of geometry in DesignModeler
 
Please refer to the DM manual. It has stated the fact, but just did not give a reason.

Michael Rasmussen October 21, 2005 12:21

Re: Physical size of geometry in DesignModeler
 
Thanks

I did not look in the manual, because I was sure this was a undocumented bug. - apparently not!

Regards

Michael

longbow October 21, 2005 20:30

Re: Physical size of geometry in DesignModeler
 
Maybe you can cheat DM by scaling your model with a factor, e.g., 1/1000. Basically, DM will see the physical size of your geometry is about 1m. After you get a mesh for this model, you can scale mesh back to its original unit. However, doing this may loss the details of small feature in your model.

Michael Rasmussen October 23, 2005 10:09

Re: Physical size of geometry in DesignModeler
 
Aaaahhh that worked !!

Thanks!

Although I havent tested it all the way, I had no problem scaling the mesh within PRE and defining domain and so on.

Best Regards

Michael

Sammer August 29, 2012 06:40

How to scale my modle in design modeler?
 
Hi

I have imported my geomtry into design modlere, and I need to scale it to its real size, just wondering if this option is available in design modeler please?

I appriciate your help.

Regards

Sammer

ghorrocks August 29, 2012 07:49

Yes, DesignModeller can do scaling.

From memory it is an option under "Body operations".

Sammer August 29, 2012 16:59

Many thanks for your help. Very helpfull.


Sammer

niazgdc June 16, 2017 01:26

Large geometry
 
Hello .i hav a problem.can u please help me out in this
can i construct geometry/domain with dimension 1000m in x direction, 4000m in y-direction and 100m in z direction in Design molder of ANSYS FLUENT. and what is the maximum size i can construct in DM of fluent

Wazdq June 16, 2017 03:27

Quote:

Originally Posted by niazgdc (Post 653479)
Hello .i hav a problem.can u please help me out in this
can i construct geometry/domain with dimension 1000m in x direction, 4000m in y-direction and 100m in z direction in Design molder of ANSYS FLUENT. and what is the maximum size i can construct in DM of fluent

Hey,

Firstly you are in the CFX Forum and not FLUENT/ANSYS Meshing & Geometry. If you want to get a better answer you should post there.

Secondly you should try to build that and see if it works. Best way to know.

Wazdq


All times are GMT -4. The time now is 15:24.