Gambit meshing problem

nana · August 26, 2009, 05:08

Dear all:

I am encounter the problem of meshing the geometry of Nasa rotor 35, the blade have twist angle form root to tip. The bad quality of mesh is appear at the adge of the blade, i tried to use lots of ways but still cannot solve it.

Kindly hope that anyone can give me some suggestion!

PSYMN · August 27, 2009, 12:47

I can't speak for anyone else, but I would need more info before I could help. How are you meshing it? Sweep or tetra/prism? Can you attach an image of the problem.

nana · August 28, 2009, 05:29

What stator tutorial u are referring? The Turbo tutorial in Gambit, is it? Yes, i have tried it already.

I am using gambit to do the meshing. The bad quality mesh is appeared at the dege of blade. Now i tried to spilt the volume into two parts, the pressure side and suction side, however, the problem is still the same.

IF u need the file, can tell me yr mail and i can send it to you. I am trying lots of way to solve it

Really appreciate on that if u can give me some suggestion

-mAx- · August 28, 2009, 06:37

as PSYMN said, post a picture of your issue

nana · August 31, 2009, 06:43

This is the geometry that i have and i have problem on meshing at the edge of the blade, please have a look. thanks

-mAx- · August 31, 2009, 06:58

same picture but with a zoom on the bad cells.

I am not sure, but is the leading surface ok? it seem to be corrupted
Advice: create a group with all the blade surfaces.
Disable the visibility of your volume, it should remain the group. Then enable the shade mode.
You will see if the blade surfaces are ok or not

August 26, 2009, 05:08	Gambit meshing problem	#1
nana Member Join Date: Jul 2009 Posts: 43 Rep Power: 17	Dear all: I am encounter the problem of meshing the geometry of Nasa rotor 35, the blade have twist angle form root to tip. The bad quality of mesh is appear at the adge of the blade, i tried to use lots of ways but still cannot solve it. Kindly hope that anyone can give me some suggestion!

August 27, 2009, 12:47	More info?	#2
PSYMN Senior Member Simon Pereira Join Date: Mar 2009 Location: Ann Arbor, MI Posts: 2,663 Blog Entries: 1 Rep Power: 47	I can't speak for anyone else, but I would need more info before I could help. How are you meshing it? Sweep or tetra/prism? Can you attach an image of the problem.

August 28, 2009, 05:29	Meshing problem	#3
nana Member Join Date: Jul 2009 Posts: 43 Rep Power: 17	What stator tutorial u are referring? The Turbo tutorial in Gambit, is it? Yes, i have tried it already. I am using gambit to do the meshing. The bad quality mesh is appeared at the dege of blade. Now i tried to spilt the volume into two parts, the pressure side and suction side, however, the problem is still the same. IF u need the file, can tell me yr mail and i can send it to you. I am trying lots of way to solve it Really appreciate on that if u can give me some suggestion

August 28, 2009, 06:37		#4
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	as PSYMN said, post a picture of your issue __________________ In memory of my friend Hervé: CFD engineer & freerider

August 31, 2009, 06:43	meshing problem	#5
nana Member Join Date: Jul 2009 Posts: 43 Rep Power: 17	This is the geometry that i have and i have problem on meshing at the edge of the blade, please have a look. thanks

August 31, 2009, 06:58		#6
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	same picture but with a zoom on the bad cells. I am not sure, but is the leading surface ok? it seem to be corrupted Advice: create a group with all the blade surfaces. Disable the visibility of your volume, it should remain the group. Then enable the shade mode. You will see if the blade surfaces are ok or not __________________ In memory of my friend Hervé: CFD engineer & freerider

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