# [ANSYS Meshing] Blade tip blocking

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March 26, 2013, 06:57
#101
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Francisco
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Quote:
 Originally Posted by Far can you make mesh under 1 million size? That is better starting point to set important parameters.
Well, I got a 5R radial, 5R upwind and 15R downwind domain around the blade with radious R. And I got to maintain y+<1.
Where should I reduce mesh density?
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 March 26, 2013, 07:02 #102 Super Moderator   Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,552 Blog Entries: 6 Rep Power: 53 How many nodes are on wind turbine? maximum 70-100 nodes may be enough. reduce mesh in upstream and downstream blocks. First try mesh with Y+ > 30

March 26, 2013, 07:06
#103
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Francisco
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Quote:
 Originally Posted by Far How many nodes are on wind turbine? maximum 70-100 nodes may be enough.
70-100 on the entire turbine surface?? R is 29 m, so it looks few nodes to me.

March 26, 2013, 07:29
#104
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Francisco
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Quote:
 Originally Posted by Far How many nodes are on wind turbine? maximum 70-100 nodes may be enough. reduce mesh in upstream and downstream blocks. First try mesh with Y+ > 30
Don't you mean 70-100,000 nodes?

 March 26, 2013, 07:31 #105 Super Moderator   Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,552 Blog Entries: 6 Rep Power: 53 I meant 70-100 nodes along blade length. Maximum 10-12 nodes in boundary layer.

March 26, 2013, 07:33
#106
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Francisco
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Quote:
 Originally Posted by Far I meant 70-100 nodes along blade length. Maximum 10-12 nodes in boundary layer.
Ok. 10-12 nodes normal to the blade or in the airfoil section perimeter?

March 26, 2013, 07:35
#107
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Sijal
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Quote:
 Originally Posted by Bollonga Ok. 10-12 nodes normal to the blade or in the airfoil section perimeter?

March 26, 2013, 07:49
#108
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Francisco
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Quote:
 Originally Posted by Far I meant 70-100 nodes along blade length. Maximum 10-12 nodes in boundary layer.
So 70-100 nodes around the airfoil perimeter, 10-12 normal.
Considering chord is about 1m, and inlet is 145m away, which max size can I use for the inlet? The same for outlet which is 435m away.

Thanks!

 November 6, 2013, 13:59 #109 New Member   Gaurav Join Date: Jul 2013 Location: India Posts: 25 Rep Power: 11 Hi, I am working on propeller blade. I am very new to ICEM, and I am trying to block meshing, would anybody please suggest some strategy for my problem.

 Tags blade tip, hexa mesh, sharp edge, wind turbine