[ICEM] Problem with meshing half NACA0009 in 3D

Eizo · May 16, 2012, 08:19

Hello!

I have a huge problem with meshing half NACA0009 profile fin. Previously I have done meshing only in 2D and now I face a problem with doing mesh in 3D. I done tetra mesh and tried to import it to Fluent, but with no result. There was an error message "Segmentation Voliation". I`m dealing with this problem for one week. If anybody could give me some hints or an advice, I would be grateful. Thanks in advance.

Screens of the problem:
http://pokazywarka.pl/cn51qj/

Ralen · May 16, 2012, 08:36

Can attach a ICEM project?

Eizo · May 16, 2012, 09:21

Yes, of course. This is only test one, so the mesh is very coarse. Here it is:
http://hostuje.net/file.php?id=c44e4...482051ae3e4ee8

Ralen · May 16, 2012, 09:29

This is only project file without geometry (*.tin) and blocking (*.blk).

Eizo · May 16, 2012, 09:36

As I said, I`m new here and I read that you would like to see the project

.

http://hostuje.net/file.php?id=42652...ea0144113a8c2c

Ralen · May 16, 2012, 10:00

It's not so simple as in 2D. A similar example in the topic naca0012. I was just trying to mesh.

Eizo · May 16, 2012, 10:03

I know that. As I said, I stuck in this point and I can`t go forward

...

Far · May 16, 2012, 10:07

attach .tin file

Eizo · May 16, 2012, 10:11

http://hostuje.net/file.php?id=ab043...1630b427ca8f00

Ralen · May 17, 2012, 07:13

That's one of the variants of the mesh.

Eizo · May 18, 2012, 12:22

Thank you very much for that. Can you give me some explanation how you done that? I see some blockin, but I have only rough idea what`s going on there. Thank you in advance.

Best regards

Ralen · May 21, 2012, 04:57

1. Create 3D Block and split it as shown in pictures 1 & 2.
2. Create O-grid for area around wing as shown in picture 3.
3. Create O-grid for area inside wing as shown in picture 4.
4. Merge all vertices in thin blocks except six inside wing as shown in picture 5.

Ralen · May 21, 2012, 05:08

5. Associate & move vertices as shown in pictures 6 & 7
6. Remove six blocks inside wing as shown in picture 8.
7. Associate faces of the wing to the surfaces of the wing ("FIN") as shown in picture 9
8. Align vertices along the z axis. Move vertices as shown in picture 10

Ralen · May 21, 2012, 05:12

9. Set the size for the mesh. (I use the global size 20 and 2 for the curves of the wing). Move the vertices to improve a quality!

Far · May 21, 2012, 06:22

Well done

Ralen · May 21, 2012, 06:55

You can also create the o-grid block along the axis Y before merge vertices.

Eizo · May 22, 2012, 06:22

Thank you for that Ralen, that was very helpful. You are the man

Eizo · June 1, 2012, 06:06

I now doing 3D mesh for two fins, which are canted and toed in. In near future I`m going to do the mesh for 3 fins. I meet problems with assigning inner vertices (FIN1.png) to surface of the fin (FIN2.png). When I`m doing premesh, the software screams so error, and the mesh don`t have shape of the geometry.

Far · June 1, 2012, 08:28

i cannot see the pics

Eizo · June 1, 2012, 08:53

Zdjęcia

Here is the model:
http://hostuje.net/file.php?id=37000...709fbdbcbfebce

May 16, 2012, 08:19	Problem with meshing half NACA0009 in 3D	#1
Eizo New Member Join Date: May 2012 Posts: 15 Rep Power: 14	Hello! I have a huge problem with meshing half NACA0009 profile fin. Previously I have done meshing only in 2D and now I face a problem with doing mesh in 3D. I done tetra mesh and tried to import it to Fluent, but with no result. There was an error message "Segmentation Voliation". I`m dealing with this problem for one week. If anybody could give me some hints or an advice, I would be grateful. Thanks in advance. Screens of the problem: http://pokazywarka.pl/cn51qj/

May 21, 2012, 06:55		#16
Ralen Member Andrey Join Date: Sep 2011 Posts: 86 Rep Power: 17	You can also create the o-grid block along the axis Y before merge vertices. Last edited by Ralen; May 21, 2012 at 08:06.

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May 16, 2012, 08:36		#2
Ralen Member Andrey Join Date: Sep 2011 Posts: 86 Rep Power: 17	Can attach a ICEM project?

May 16, 2012, 09:21		#3
Eizo New Member Join Date: May 2012 Posts: 15 Rep Power: 14	Yes, of course. This is only test one, so the mesh is very coarse. Here it is: http://hostuje.net/file.php?id=c44e4...482051ae3e4ee8

May 16, 2012, 09:29		#4
Ralen Member Andrey Join Date: Sep 2011 Posts: 86 Rep Power: 17	This is only project file without geometry (.tin) and blocking (.blk).

May 16, 2012, 09:36		#5
Eizo New Member Join Date: May 2012 Posts: 15 Rep Power: 14	As I said, I`m new here and I read that you would like to see the project . http://hostuje.net/file.php?id=42652...ea0144113a8c2c

May 16, 2012, 10:00		#6
Ralen Member Andrey Join Date: Sep 2011 Posts: 86 Rep Power: 17	It's not so simple as in 2D. A similar example in the topic naca0012. I was just trying to mesh.

May 16, 2012, 10:03		#7
Eizo New Member Join Date: May 2012 Posts: 15 Rep Power: 14	I know that. As I said, I stuck in this point and I can`t go forward ...

May 16, 2012, 10:07		#8
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	attach .tin file

May 16, 2012, 10:11		#9
Eizo New Member Join Date: May 2012 Posts: 15 Rep Power: 14	http://hostuje.net/file.php?id=ab043...1630b427ca8f00

May 18, 2012, 12:22		#11
Eizo New Member Join Date: May 2012 Posts: 15 Rep Power: 14	Thank you very much for that. Can you give me some explanation how you done that? I see some blockin, but I have only rough idea what`s going on there. Thank you in advance. Best regards

May 21, 2012, 06:22		#15
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	Well done

May 22, 2012, 06:22		#17
Eizo New Member Join Date: May 2012 Posts: 15 Rep Power: 14	Thank you for that Ralen, that was very helpful. You are the man

June 1, 2012, 06:06		#18
Eizo New Member Join Date: May 2012 Posts: 15 Rep Power: 14	I now doing 3D mesh for two fins, which are canted and toed in. In near future I`m going to do the mesh for 3 fins. I meet problems with assigning inner vertices (FIN1.png) to surface of the fin (FIN2.png). When I`m doing premesh, the software screams so error, and the mesh don`t have shape of the geometry.

June 1, 2012, 08:28		#19
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	i cannot see the pics

June 1, 2012, 08:53		#20
Eizo New Member Join Date: May 2012 Posts: 15 Rep Power: 14	Zdjęcia Here is the model: http://hostuje.net/file.php?id=37000...709fbdbcbfebce