# Regarding box keyword in toposet Dict!

 User Name Remember Me Password
 Register Blogs Members List Search Today's Posts Mark Forums Read

 LinkBack Thread Tools Display Modes
 September 28, 2013, 03:38 Regarding box keyword in toposet Dict! #1 Senior Member   Mominul MuKuT Join Date: Mar 2009 Location: Bangladesh Posts: 123 Rep Power: 9 To simulate flow induced by plasma actuator solid-fluid domain is necessary, hence in my previous post some foamers suggested me to learn chtMultiRegionFoam/chtmultiRegionSimpleFoam. Today I am practising multi region heat transfer related tutorials, but I don't understand following keyword used in those tutorials.....found in toposet dict. // Heater { name heater; type cellSet; action new; source boxToCell; sourceInfo { box (-0.01001 0 -100 )(0.01001 0.00999 100); } } I want to know the details about the numbers at right side of box keyword, are they co-ordinates of box of a specific solid/fluid (in example, that box defines a heater)? Thanks in advance. update: I think those are the indication of box co-ordinates, as stated here, if so...then the number '100' is confusing as in blockmeshDict I found the domain size is 0.2X0.08X0.1 (in meter) with 30X10X10 cells in xyz directions. If those are coordinates then 100 (z value) goes outside of domain!!!!

 September 28, 2013, 09:00 #2 Senior Member   Nima Samkhaniani Join Date: Sep 2009 Location: Tehran, Iran Posts: 1,195 Blog Entries: 1 Rep Power: 16 those points define two heads of main diameter of box, so those cell which are placed on this region will be captured as cellSet __________________ Telegram channel (https://telegram.me/openfoam4Iranian) My Weblog (http://openfoam.blogfa.com/) Training Course on OpenFOAM at (http://www.isme.ir/)

September 28, 2013, 09:14
#3
Senior Member

Mominul MuKuT
Join Date: Mar 2009
Location: Bangladesh
Posts: 123
Rep Power: 9
Quote:
 Originally Posted by nimasam those points define two heads of main diameter of box, so those cell which are placed on this region will be captured as cellSet
Thanks for your reply. But I am not clear from your reply. How can I define that box location based on domain geometry?

 September 28, 2013, 09:21 #4 Senior Member   Nima Samkhaniani Join Date: Sep 2009 Location: Tehran, Iran Posts: 1,195 Blog Entries: 1 Rep Power: 16 as i said, if you want to define a box! you need to define two points these points are two heads of main diameter of the box. if you want to define your box in domain , then define these points in domian __________________ Telegram channel (https://telegram.me/openfoam4Iranian) My Weblog (http://openfoam.blogfa.com/) Training Course on OpenFOAM at (http://www.isme.ir/)

September 28, 2013, 09:30
#5
Senior Member

Mominul MuKuT
Join Date: Mar 2009
Location: Bangladesh
Posts: 123
Rep Power: 9
Quote:
 Originally Posted by nimasam as i said, if you want to define a box! you need to define two points these points are two heads of main diameter of the box. if you want to define your box in domain , then define these points in domian
okey. The domain size is (tutorial: multiRegion Heater) 0.2X0.08X0.1 (in meter) with 30X10X10 cells......
box (-0.01001 0 -100 )(0.01001 0.00999 100);

so in z direction the box goes outside of domain?? Actually I am confused about the z location of box i.e. -100 t0 100

 September 28, 2013, 09:38 #6 Senior Member   Nima Samkhaniani Join Date: Sep 2009 Location: Tehran, Iran Posts: 1,195 Blog Entries: 1 Rep Power: 16 well Mominul its OK! consider an imaginary box larger than! domain what happens? nothing special! that part of domain which are in that box are selected! __________________ Telegram channel (https://telegram.me/openfoam4Iranian) My Weblog (http://openfoam.blogfa.com/) Training Course on OpenFOAM at (http://www.isme.ir/)

September 28, 2013, 09:49
#7
Senior Member

Mominul MuKuT
Join Date: Mar 2009
Location: Bangladesh
Posts: 123
Rep Power: 9
Quote:
 Originally Posted by nimasam well Mominul its OK! consider an imaginary box larger than! domain what happens? nothing special! that part of domain which are in that box are selected!
Thank you. Let see what happen next when I apply it to my flow domain.

September 28, 2013, 19:24
#8
Senior Member

Mominul MuKuT
Join Date: Mar 2009
Location: Bangladesh
Posts: 123
Rep Power: 9
Quote:
 Originally Posted by mukut Thank you. Let see what happen next when I apply it to my flow domain.
Can I define the box geometry based on domain xyz coordinates? Here is my flow domain.

thanks

September 28, 2013, 23:36
#9
Senior Member

Mominul MuKuT
Join Date: Mar 2009
Location: Bangladesh
Posts: 123
Rep Power: 9
Quote:
 Originally Posted by nimasam well Mominul its OK! consider an imaginary box larger than! domain what happens? nothing special! that part of domain which are in that box are selected!
I have found it as follows from toposet dic of openfoamwiki

• boxToCell: Select all cells with cellCentre within bounding box
boxToCell (MINX MINY MINZ) (MAXX MAXY MAXZ)

 Tags box, multi regions, open foam, simulation, toposet

 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 Jessica OpenFOAM Native Meshers: snappyHexMesh and Others 2 September 12, 2013 20:54 [DesignModeler] change/increase model size box oewnce932c ANSYS Meshing & Geometry 3 May 24, 2013 06:55 Grimoli OpenFOAM Pre-Processing 1 April 14, 2013 08:54 Anil CFX 2 June 27, 2006 10:18 Dong Phoenics 0 March 2, 2006 22:20

All times are GMT -4. The time now is 17:11.

 Contact Us - CFD Online - Top