[GAMBIT] Gambit - Problem having shadow wall on volume

ejvikings · March 21, 2012, 19:53

I've constructed a 3d file in gambit to model heat and mass transfer from a leaf. I have a rectangular volume made and i made a volume inside the rectangular volume to be the leaf.

After meshing the inside the leaf volume with hex/wedge cooper and the rectangular volume using hex map, specifying the zones and exporting it to fluent, under boundary conditions, there is just leaf, there is no leaf_surface which I need for some user defined functions.

What do I need to change in gambit so that I can get the leaf to have the leaf shadow as well?

-mAx- · March 22, 2012, 06:51

you need to split or substract.
Post a picture or a sketch

ejvikings · March 22, 2012, 15:19

http://imageshack.us/photo/my-images/138/leaf3d2.png/

There's the picture of the gambit file before I meshed bot the inside of the leaf volume and then the overall volume. I tried subtracting the leaf volume from the rectangular volume, but then it won't mesh using the same hex method.

-mAx- · March 23, 2012, 01:30

ok then if you substract the leaf from the rectangular volume, and you cannot mesh the volume with hex anymore, that means you are on the right way.
Thus you cannot mesh non-basic volume with hex automatically.
You need to split your volume, into smaller volumes, which will be hex- meshable

March 21, 2012, 19:53	Gambit - Problem having shadow wall on volume	#1
ejvikings New Member Edward Overy Jr. Join Date: Jan 2012 Posts: 5 Rep Power: 14	I've constructed a 3d file in gambit to model heat and mass transfer from a leaf. I have a rectangular volume made and i made a volume inside the rectangular volume to be the leaf. After meshing the inside the leaf volume with hex/wedge cooper and the rectangular volume using hex map, specifying the zones and exporting it to fluent, under boundary conditions, there is just leaf, there is no leaf_surface which I need for some user defined functions. What do I need to change in gambit so that I can get the leaf to have the leaf shadow as well?

March 22, 2012, 06:51		#2
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	you need to split or substract. Post a picture or a sketch __________________ In memory of my friend Hervé: CFD engineer & freerider

March 23, 2012, 01:30		#4
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	ok then if you substract the leaf from the rectangular volume, and you cannot mesh the volume with hex anymore, that means you are on the right way. Thus you cannot mesh non-basic volume with hex automatically. You need to split your volume, into smaller volumes, which will be hex- meshable __________________ In memory of my friend Hervé: CFD engineer & freerider

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March 22, 2012, 15:19		#3
ejvikings New Member Edward Overy Jr. Join Date: Jan 2012 Posts: 5 Rep Power: 14	http://imageshack.us/photo/my-images/138/leaf3d2.png/ There's the picture of the gambit file before I meshed bot the inside of the leaf volume and then the overall volume. I tried subtracting the leaf volume from the rectangular volume, but then it won't mesh using the same hex method.