CFD Online Discussion Forums

CFD Online Discussion Forums (
-   CFX (
-   -   CFX extruded 2D mesh...! (

mayis January 6, 2009 17:13

CFX extruded 2D mesh...!
Hi to all,

I have to mesh a 3d very thin geometry. I tried every types of meshing in CFX and I decided to use 2d extruded mesh. It is the best for me. But I have a problem about extruded periodic pair!!! I have to enter the different periodic pairs in only one location according to the program. In my geometry I have a thin body in the big one. To provide periodic pairs I splitted it to 3 body(up pair; middle pair which is the same level with the inner body; down pair).I hope I could explain my problem and please I need your help!!!


Rogerio Fernandes Brito January 7, 2009 07:32

Re: CFX extruded 2D mesh...!
Why don┤t u build a 3d geometry with a thin lenght on z-direction, instead of making only a 2D?

mayis January 7, 2009 15:58

Re: CFX extruded 2D mesh...!
Hi again,

I did volume mesh with advancing front and ─▒nflation 3d method. But my inner body has 0.1 mm thickness so I used very small face spacing. but it gave me plenty numbers of tethedral elemans. I don't want it. extruded 2d mesh will give me what I want, I suppose! I have already splitted my geometry to 3 body on z direction which one has 0.1 mm thickness as the same level with inner body to provide periodicity.

Mr.Brito, I suppose that my first method is the same with your opinion,but if I'm wrong could you please explain it to me...!

Glenn Horrocks January 7, 2009 18:40

Re: CFX extruded 2D mesh...!

Can you post an image of the geometry?

Glenn Horrocks

Rogerio Fernandes Brito January 7, 2009 22:11

Re: CFX extruded 2D mesh...!
Send me the geometry, i will able to help u sir


mayis January 8, 2009 13:56

Re: CFX extruded 2D mesh...!
My volume (air) has totaly 2.1 mm thickness. In the middle, I have a 0.1 mm solid body. I splitted my volume to 3 part 1 mm -0.1 mm -1 mm (thicknesses) on z direction. I did it to have periodic pairs. Air is covering the solid and to use 2d extruded mesh ─▒ have to have periodic pairs. But my problem is when ─▒ finish the mesh, 0.1 mm solid is looking as it has 1 mm thickness and it is becoming apart from the air( I mean I'm having a meaningless blank in the volume).

I'm sorry for not sending any image....!

All times are GMT -4. The time now is 01:27.