Multiblock meshing in gambit for wind turbine

luxingzhe · September 11, 2011, 07:57

Hi there

i am doing a project on 3D Wind turbine simulation, i chose gambit to build the model and Fluent to calculate. however, there seems to be lots of problems when i try to mesh the model in gambit. Can anyone give me some suggestions?

Regards,
Xing

-mAx- · September 12, 2011, 10:10

be more specific

luxingzhe · September 12, 2011, 10:52

Quote:

Originally Posted by -mAx-

be more specific

here is the model i built in gambit. As i marked out, the inner part is going to be the rotating part, which need to be meshed very fine. Could you provide me any good ideas on multiblock meshing on this domain. Cause i tried several ways of it, it always shows me some strange errors. Besides, i am going to use the Sliding mesh model which wouldn't be a problem, i tested a similar model prior to this.

luxingzhe · September 12, 2011, 10:58

luxingzhe · September 12, 2011, 11:01

this is the model i built. thanks!

-mAx- · September 13, 2011, 01:04

Quote:

Originally Posted by luxingzhe

Cause i tried several ways of it, it always shows me some strange errors.

*what kind of errors?
*paste error messages
*if you want to mesh your stuff by blocking, I assume you want full hexa mesh. If you don't need absolutely an hexa mesh, you may get a faster mesh by meshing it with tetra-hexcore

sabin · September 13, 2011, 01:44

From your geometry I guess that it will be difficult to do structured mesh for your case. Anyway you can easily do unstructured mesh in Gambit. Use size function option in it, allow mesh to grow from blade surfaces.

Another good option is use of ICEM CFD, an excellent meshing software.

all the best

Sabin Mathew

luxingzhe · September 13, 2011, 10:49

Thanks for the reply, i am just looking for good method which firstly can mesh the whole domain successfully, and secondly get a fine mesh close to the blade, it doesn't have to be absolute hexa meah. i think Multiblcok meshing would be good strategy to control your mesh. And i tried several ways of dividing the whole domain into several blocks which doesn't give me results i wanted. so i am wondering whether you have good concept for multiblock mesh on my sepcific geometry.

Best Regards,

luxingzhe · September 13, 2011, 10:51

my adviser suggested me also to use ICEM, i will come back to you later after i tried it. thanks for your reply. best regards,

September 11, 2011, 07:57	Multiblock meshing in gambit for wind turbine	#1
luxingzhe New Member luxingzhe Join Date: Feb 2011 Posts: 25 Rep Power: 15	Hi there i am doing a project on 3D Wind turbine simulation, i chose gambit to build the model and Fluent to calculate. however, there seems to be lots of problems when i try to mesh the model in gambit. Can anyone give me some suggestions? Regards, Xing

September 12, 2011, 10:10		#2
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	be more specific __________________ In memory of my friend Hervé: CFD engineer & freerider

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September 12, 2011, 10:58		#4
luxingzhe New Member luxingzhe Join Date: Feb 2011 Posts: 25 Rep Power: 15

September 13, 2011, 01:44		#7
sabin New Member sabin mathew Join Date: Sep 2011 Location: Mumbai Posts: 18 Rep Power: 14	From your geometry I guess that it will be difficult to do structured mesh for your case. Anyway you can easily do unstructured mesh in Gambit. Use size function option in it, allow mesh to grow from blade surfaces. Another good option is use of ICEM CFD, an excellent meshing software. all the best Sabin Mathew

September 13, 2011, 10:49		#8
luxingzhe New Member luxingzhe Join Date: Feb 2011 Posts: 25 Rep Power: 15	Thanks for the reply, i am just looking for good method which firstly can mesh the whole domain successfully, and secondly get a fine mesh close to the blade, it doesn't have to be absolute hexa meah. i think Multiblcok meshing would be good strategy to control your mesh. And i tried several ways of dividing the whole domain into several blocks which doesn't give me results i wanted. so i am wondering whether you have good concept for multiblock mesh on my sepcific geometry. Best Regards,

September 13, 2011, 10:51		#9
luxingzhe New Member luxingzhe Join Date: Feb 2011 Posts: 25 Rep Power: 15	my adviser suggested me also to use ICEM, i will come back to you later after i tried it. thanks for your reply. best regards,