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Search: Posts Made By: Far
Forum: ANSYS Meshing & Geometry March 26, 2013, 08:35
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
Normal to blade.

Normal to blade.
Forum: ANSYS Meshing & Geometry March 26, 2013, 08:31
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
I meant 70-100 nodes along blade length. Maximum...

I meant 70-100 nodes along blade length. Maximum 10-12 nodes in boundary layer.
Forum: ANSYS Meshing & Geometry March 26, 2013, 08:02
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
How many nodes are on wind turbine? maximum...

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
Forum: ANSYS Meshing & Geometry March 26, 2013, 07:36
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
can you make mesh under 1 million size? That is...

can you make mesh under 1 million size? That is better starting point to set important parameters.
Forum: ANSYS Meshing & Geometry March 26, 2013, 07:23
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
Mesh size ?

Mesh size ?
Forum: ANSYS Meshing & Geometry March 20, 2013, 05:29
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
why not a single mesh? I would start with one...

why not a single mesh? I would start with one block and then using splits will capture wind turbine.
Forum: ANSYS Meshing & Geometry March 18, 2013, 13:55
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
Better option would be to give finite thickness...

Better option would be to give finite thickness at trailing edge and apply full o-grid around lower and upper blocks.
Forum: ANSYS Meshing & Geometry March 15, 2013, 11:44
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
Thumbs up Good job

You have done a wonderful job. I would like to see when you combine blocking of this block with upper block where trailing edge is sharp.
Forum: ANSYS Meshing & Geometry March 9, 2013, 08:16
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
turn off Nodes locked turn off parameters...

turn off Nodes locked

turn off parameters locked and try

domain extents : upstream 15 C and downstream 25 C Try and come back.

What is your angle of attach?

Reverse flow and turbulence...
Forum: ANSYS Meshing & Geometry March 8, 2013, 05:26
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
Download file from first post in following thread...

Download file from first post in following thread and look at the meshing in farfield.

http://www.cfd-online.com/Forums/ansys-meshing/105828-fundamental-mistake-mesh.html
Forum: ANSYS Meshing & Geometry March 7, 2013, 11:20
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
Just few thoughts: 1. Open up mesh in far...

Just few thoughts:

1. Open up mesh in far field. In other words do not carry forward mesh sizing and growth ratio in farfield. Instead make spacing uniform and use match edges.

2. check domain...
Forum: ANSYS Meshing & Geometry March 7, 2013, 06:53
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
check " only visible index range"

check " only visible index range"
Forum: ANSYS Meshing & Geometry March 7, 2013, 06:04
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
Min quality > 0.3, min angle > 18 amd volume...

Min quality > 0.3, min angle > 18 amd volume change <20
Forum: ANSYS Meshing & Geometry March 6, 2013, 09:03
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
Qaulity, min angle and volume change. Also...

Qaulity, min angle and volume change. Also dihedral angle (should be less than 165)
Forum: ANSYS Meshing & Geometry March 6, 2013, 08:37
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
blocking 1 is perfect. No problem of negative...

blocking 1 is perfect. No problem of negative volume
Forum: ANSYS Meshing & Geometry March 6, 2013, 06:55
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
please attach .tin

please attach .tin
Forum: ANSYS Meshing & Geometry March 5, 2013, 11:17
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
yes. but it did not increase quality much, though...

yes. but it did not increase quality much, though it avoids the negative volume.
Forum: ANSYS Meshing & Geometry March 5, 2013, 08:36
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
collapse trailing edge. Trailing edge is very...

collapse trailing edge. Trailing edge is very sharp and this blocking strategy wont work. Try the one I posted earlier.

Edit : Min quality is now 0.06 after adjusting the vertices and increasing...
Forum: ANSYS Meshing & Geometry March 4, 2013, 13:18
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
Pics

http://imageshack.us/a/img35/4967/a001st.jpg

http://imageshack.us/a/img841/8404/a002m.jpg

http://imageshack.us/a/img534/2787/a006d.jpg

http://imageshack.us/a/img202/7589/a004hg.jpg
...
Forum: ANSYS Meshing & Geometry March 4, 2013, 13:03
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
This may be one of the solutions...

This may be one of the solutions...
Forum: ANSYS Meshing & Geometry March 4, 2013, 08:16
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
blocking is not correct.

blocking is not correct.
Forum: ANSYS Meshing & Geometry February 26, 2013, 06:51
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
Yes, if elements are penetrating geometry or...

Yes, if elements are penetrating geometry or making very high angle.
Forum: ANSYS Meshing & Geometry February 22, 2013, 10:55
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
Already asked by Broly ;) This topic has...

Already asked by Broly ;)


This topic has been discussed in very much detail by Simon. Search on forum.
Forum: ANSYS Meshing & Geometry February 22, 2013, 04:33
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
What is difference between making a single...

What is difference between making a single blocking and using suptopo? How do you make sure that at interface you have similar features for both blocking files?
Forum: ANSYS Meshing & Geometry February 22, 2013, 04:20
Replies: 108
[ANSYS Meshing] Blade tip blocking
Views: 12,619
Posted By Far
How do you import the sub-topo? How does sub-topo...

How do you import the sub-topo? How does sub-topo work and what is the advantage of using it?
Showing results 1 to 25 of 33

 
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