[GAMBIT] Negative Volume

aja1345 · May 2, 2016, 03:29

Hi....

I dont know that why is created negative volume in the following Gambit file...I used Boundary layer in Gambit. I am grateful that guide me about this case.

http://www.4shared.com/zip/VtOR6dREce/GGG.html

Thanks.

Best.

Aja

-mAx- · May 2, 2016, 06:52

Try to upload your file on another server (dropbox for instance), your link bring lot's of pop-up ( and I am at the office...)

aja1345 · May 2, 2016, 07:51

https://www.dropbox.com/s/8n0ivbyf793jmqc/GGG.zip?dl=0

Max, I face with these problems(Negative volume messages) very much in Gambit. Sometimes i change ratio(I increase first element) and then there are negative volume messages in Gambit and it is ok. but sometimes i have to apply fine first element that then negative volumes messages appear. This is weakness in Gambit.

How do i fixed this problem in Gambit?

Thanks.

-mAx- · May 2, 2016, 08:06

I cannot reach your file.
You need to place your file in Public folder, then copy and paste the link.

aja1345 · May 2, 2016, 09:33

I am new in dropbox! i don't see public folder...

Please see the following link, Do you download it?

http://s6.picofile.com/d/3dafde93-be...4cce2c/GGG.zip

-mAx- · May 2, 2016, 09:45

now it is ok.
Check your mesh on faces 832 / 890 /85 /882; it is not ok.
That's why you get negative cells

May 2, 2016, 03:29	Negative Volume	#1
aja1345 Senior Member Aja Join Date: Nov 2013 Posts: 496 Rep Power: 14	Hi.... I dont know that why is created negative volume in the following Gambit file...I used Boundary layer in Gambit. I am grateful that guide me about this case. http://www.4shared.com/zip/VtOR6dREce/GGG.html Thanks. Best. Aja

May 2, 2016, 06:52		#2
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	Try to upload your file on another server (dropbox for instance), your link bring lot's of pop-up ( and I am at the office...) aja1345 likes this. __________________ In memory of my friend Hervé: CFD engineer & freerider

May 2, 2016, 08:06		#4
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	I cannot reach your file. You need to place your file in Public folder, then copy and paste the link. __________________ In memory of my friend Hervé: CFD engineer & freerider

May 2, 2016, 09:45		#6
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	now it is ok. Check your mesh on faces 832 / 890 /85 /882; it is not ok. That's why you get negative cells __________________ In memory of my friend Hervé: CFD engineer & freerider

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May 2, 2016, 07:51		#3
aja1345 Senior Member Aja Join Date: Nov 2013 Posts: 496 Rep Power: 14	https://www.dropbox.com/s/8n0ivbyf793jmqc/GGG.zip?dl=0 Max, I face with these problems(Negative volume messages) very much in Gambit. Sometimes i change ratio(I increase first element) and then there are negative volume messages in Gambit and it is ok. but sometimes i have to apply fine first element that then negative volumes messages appear. This is weakness in Gambit. How do i fixed this problem in Gambit? Thanks.

May 2, 2016, 09:33		#5
aja1345 Senior Member Aja Join Date: Nov 2013 Posts: 496 Rep Power: 14	I am new in dropbox! i don't see public folder... Please see the following link, Do you download it? http://s6.picofile.com/d/3dafde93-be...4cce2c/GGG.zip