Discussion Groups

Simulation CFD

Reply
Distinguished Contributor
jrm_1971
Posts: 112
Registered: ‎03-31-2011

How is the space automatically filled?

200 Views, 5 Replies
10-21-2012 09:17 AM

How is the empty space automatically filled with a fluid volume when it is brought over from Inventor like in this video?

 

http://vp.telvue.com/player?id=T01885&video=58311

Please use plain text.
Product Support
wildej
Posts: 778
Registered: ‎08-25-2011

Re: !!!! How is the space automatically filled? !!!!

10-22-2012 01:06 AM in reply to: jrm_1971

Hi jrm,

 

It is a boolean process, which only works if the model is 100% sealed. The advantage of utilisnig this vs using the 'Void Fill' function in CFD, is that we have control over the lengths of the inlets and outlets - ensuring a nice developed flow from the inlet and no recirculation over the outlet.



Jon Wilde
Please use plain text.
Distinguished Contributor
jrm_1971
Posts: 112
Registered: ‎03-31-2011

Re: !!!! How is the space automatically filled? !!!!

10-22-2012 06:27 AM in reply to: wildej

My model was 100% sealed and it did not do it automatically. Is there a setting in CFD 360 for auto fill?

Please use plain text.
Product Support
wildej
Posts: 778
Registered: ‎08-25-2011

Re: !!!! How is the space automatically filled? !!!!

10-22-2012 06:38 AM in reply to: jrm_1971

No, it would/should do it automatically, unless there is something very complex that it could be struggling with?

Or if there is a tiny gap somewhere. From experience it is often the latter.

 

If there is a leak, to find it you could place the entire model in a box - within CFD using the Geometry tools.

Suppress everything apart from the air, apply a P=1psi internally and a p=0 externally and use and ISO surface to identify the leakage path.

 



Jon Wilde
Please use plain text.
Distinguished Contributor
jrm_1971
Posts: 112
Registered: ‎03-31-2011

Re: !!!! How is the space automatically filled? !!!!

10-26-2012 04:02 PM in reply to: wildej

I performed the leak test to this video

 

http://wikihelp.autodesk.com/Simulation_CFD/enu/community/Videos/How_to_Generate_an_Interior_Volume_...

 

No leaks show. I did fill the void manually, but I suspect the same thing that resulted in the automatic fill failure is boogering my analysis results.

Please use plain text.
Product Support
wildej
Posts: 778
Registered: ‎08-25-2011

Re: !!!! How is the space automatically filled? !!!!

10-29-2012 01:22 AM in reply to: jrm_1971

Please could you attach a cfz/support file?



Jon Wilde
Please use plain text.