[GAMBIT] cylinder structured mesh

masoodina · July 2, 2012, 08:00

hi .

how can i generate a mesh like this in gambit ??

i dont know how to add nodes to have such a mesh !!
any help or tutorial appreciated .

-mAx- · July 2, 2012, 08:21

on your first picture you can see a square at center from disk.
Let assume you only have the disk (2d) the decomposition will be a square and then join corners from square to the circle (you need to split the circle with some points)
Sans titre.jpg

masoodina · July 2, 2012, 10:05

Quote:

Originally Posted by -mAx-

on your first picture you can see a square at center from disk.
Let assume you only have the disk (2d) the decomposition will be a square and then join corners from square to the circle (you need to split the circle with some points)
Attachment 14160

hi max . thanks for yoyr help . i did it .

zainab · July 30, 2012, 17:11

hi
I have the same problem. please, if you get any solution tell me.

masoodina · July 31, 2012, 05:13

Quote:

Originally Posted by zainab

hi
I have the same problem. please, if you get any solution tell me.

hi zeinab . while in gambit draw a cylinder then split it into 4 equal parts , make a cube at center of cylinder ,
subtract cube from the cylindrical parts
now use volume mesh >>hex/map

remember to connect the faces .

u can do this in 2d or 3d

zainab · August 1, 2012, 11:20

Hi Masood, thank you for your help
I working as you tell me, finally i get a five meshed domains, when I wont to export the mesh to FLUENT , must unite all the volumes to be one cylindrical volume to specify the regions, inlet, outlet, etc.
when I do this step the mesh deleted.
what can I do

Far · August 1, 2012, 11:55

No need to unite them. Go to boundary condition panel and select all five faces on one side as inlet and corresponding five faces at other side as outlet. Similarly for the outer wall of the cylinder

wesam · October 9, 2012, 11:01

Quote:

Originally Posted by masoodina

hi zeinab . while in gambit draw a cylinder then split it into 4 equal parts , make a cube at center of cylinder ,
subtract cube from the cylindrical parts
now use volume mesh >>hex/map

remember to connect the faces .

u can do this in 2d or 3d

....
i need the steps to make a mesh like in pic by gambit . please i need help

nkme2007 · October 10, 2012, 06:52

Hello All,

I want to do analysis of heat transfer from water flowing through pipes submerged inside concrete. I am modelling in GAMBIT and wish to analyse it on Ansys FLUENT.

Can anybody help me out, how to model and simulate?

Does any tutorials exist?

shahrbanoo · May 27, 2014, 02:26

Hi
I made this mesh on 2d circle, but when I change it to 3d mesh I have negative volume . how can I make it better not to have negative volume? and why I have them?

-mAx- · May 27, 2014, 04:31

display your geometry

July 2, 2012, 08:21		#2
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	on your first picture you can see a square at center from disk. Let assume you only have the disk (2d) the decomposition will be a square and then join corners from square to the circle (you need to split the circle with some points) Sans titre.jpg __________________ In memory of my friend Hervé: CFD engineer & freerider

May 27, 2014, 04:31		#11
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	display your geometry __________________ In memory of my friend Hervé: CFD engineer & freerider

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July 30, 2012, 17:11		#4
zainab New Member zainab Join Date: Mar 2012 Posts: 17 Rep Power: 14	hi I have the same problem. please, if you get any solution tell me.

August 1, 2012, 11:20		#6
zainab New Member zainab Join Date: Mar 2012 Posts: 17 Rep Power: 14	Hi Masood, thank you for your help I working as you tell me, finally i get a five meshed domains, when I wont to export the mesh to FLUENT , must unite all the volumes to be one cylindrical volume to specify the regions, inlet, outlet, etc. when I do this step the mesh deleted. what can I do

August 1, 2012, 11:55		#7
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	No need to unite them. Go to boundary condition panel and select all five faces on one side as inlet and corresponding five faces at other side as outlet. Similarly for the outer wall of the cylinder

October 10, 2012, 06:52		#9
nkme2007 Member Tamil Nadu Join Date: Oct 2012 Posts: 44 Rep Power: 14	Hello All, I want to do analysis of heat transfer from water flowing through pipes submerged inside concrete. I am modelling in GAMBIT and wish to analyse it on Ansys FLUENT. Can anybody help me out, how to model and simulate? Does any tutorials exist?

May 27, 2014, 02:26		#10
shahrbanoo Member shahrbanoo Join Date: Mar 2013 Posts: 63 Rep Power: 13	Hi I made this mesh on 2d circle, but when I change it to 3d mesh I have negative volume . how can I make it better not to have negative volume? and why I have them?