# Split Volume in Gambit

 Register Blogs Members List Search Today's Posts Mark Forums Read

 March 24, 2006, 17:58 Split Volume in Gambit #1 Meenu Guest   Posts: n/a Hello I have a sphere and I want to split it into two halves or just two parts so that i get two faces. How to use Split volume tool in Gambit for this?

 March 25, 2006, 01:13 Re: Split Volume in Gambit #2 alex marshall Guest   Posts: n/a make the one face for the plan u want to cut .... that plan may or many not be exteded out volume. that use split volume by face option ........... 2nd method is that make the four vertices on the diameter (the plan or face by which u wanna cut it) then make the lines and from theses lines make the face and then split that volume by that face ........... is it clear ?????????

 March 27, 2006, 17:12 Re: Split Volume in Gambit #3 Meenu Guest   Posts: n/a Hi Alex I'm still not able to do this. Steps I'm following r? 1.Draw a sphere with given radius. 2.Draw a face(rectangle)with width as diameter of sphere and height as 0.0000001(almost negligible). 3.Then use split volume by face. 4.Then mesh. but it gives me errors in this. I'm new to this software ,may be i have some trivial questions, so pardon me for them. Please let me know where i'm making a mistake. Thanks. Meenu

 March 28, 2006, 09:31 Re: Split Volume in Gambit #4 Jason Guest   Posts: n/a First of all... Gambit has an absolute tolerance of 1e-06, which is larger than the 'height' you've specified... so with a specified width, and no 'height', this will give you a line... If you split a volume with a line, you'll end up with a volume that has an edge within it, and I'm not 100% sure how well Gambit will handle this, especially since it's not officially a line... in Gambit, it will not be sure if your height was 0 or 1e-06 (since the height you specified is between those values) so it will react very funny, which is what's giving you your errors. Are you trying to split the volume in half, or are you trying to split the spherical face of the volume in half (these are two very distinct situations)? Either way, these are the steps as I see them: Create a face where both the height and width are at least the same size as the diameter of the sphere. If you're trying to split the spherical face, then go to the split command in the face tools, otherwise if you're trying to split the volume, then go to the split command in the volume tools. Pick the sphere as the object you want to split, make sure you're using 'split with face' and then pick the rectangular face you want to split the sphere with. This internal tolerance in Gambit is extremely important and will lead to many problems if not taken seriously. If you're considering geometry where one of the dimensions is less than this tolerance, then it's better to remove that dimension from the geometry (i.e. if a volume's third dimension is too small, then just go with a face... same with a face becoming an edge or an edge becoming a vertex). Hope this helps, and good luck, Jason

 March 29, 2006, 20:09 Re: Split Volume in Gambit #5 Meenu Guest   Posts: n/a Thanks I was able to do it now. Meenu

 May 2, 2011, 22:26 hey #6 New Member   Join Date: Apr 2011 Posts: 11 Rep Power: 8 I have created a person (made of different volumes). The person is standing inside a big cube which in itself is a separate volume. I want to study the air flow inside the cube. Do I have to first split/subract or do anything like that with outside volume and the volumes inside it (person) or Can I just go ahead and create edge,face and then volume mesh for the whole thing without specifying any such relation between them?? someone told me it is necessary to split but when Im trying to split the person from the outside volume, it gives me an error "coincident face_face_ints with different body vertices". Can anyone help me?? I would greatly appreciate your response. Thanks!

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post sofie1 OpenFOAM Other Meshers: ICEM, Star, Ansys, Pointwise, GridPro, Ansa, ... 6 January 18, 2012 03:34 smk4 ANSYS Meshing & Geometry 3 June 30, 2011 10:00 John peter FLUENT 2 May 2, 2011 22:29 costa FLUENT 1 January 30, 2007 12:55 Amit FLUENT 4 January 24, 2007 18:10

All times are GMT -4. The time now is 11:47.