CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > ANSYS Meshing & Geometry

[ANSYS Meshing] My first mesh in Ansys (for a NACA0012)

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 1, 2013, 00:59
Default My first mesh in Ansys (for a NACA0012)
  #1
New Member
 
Join Date: May 2013
Posts: 3
Rep Power: 12
alcrlpe is on a distinguished road
Hi
I'm having problems trying to do a structured mesh for an airfoil
If you could help me I would be really grateful

I'm trying to get this:


I've followed this tutorial https://confluence.cornell.edu/displ...+Specification

But, at the time of getting the mesh, it doesn't take into account the sizings I imposed, I don't know the reason. I've followed that tutorial step by step. But all I get is the mesh I attached.

As you can see, it does not follow the sizings at all, it does what it wants even though I defined everyting. What I have to do? I've already thought about changing the global settings but I don't get any results...

That mesh is really inefficient, since far away from the wing I have even smaller mesh elements, which is ridiculous, I'm trying just the opposite, get bigger elements far from the perturbed flow zone.
I'm a beginner in this but I'm already desperate...

I hope someone can help me! Thank you
Attached Images
File Type: jpg mesh.jpg (50.6 KB, 36 views)
alcrlpe is offline   Reply With Quote

Old   June 2, 2013, 13:57
Default
  #2
New Member
 
Join Date: May 2013
Posts: 3
Rep Power: 12
alcrlpe is on a distinguished road
No one could help me please? at least some hint, what I have to do to make de edge sizings work... I've activated them but the mesh performs it like they were not there. Actually in some zones it does, but in others it doesn't.
alcrlpe is offline   Reply With Quote

Old   June 3, 2013, 05:08
Default
  #3
Super Moderator
 
flotus1's Avatar
 
Alex
Join Date: Jun 2012
Location: Germany
Posts: 3,398
Rep Power: 46
flotus1 has a spectacular aura aboutflotus1 has a spectacular aura about
Quote:
Edge Bias
It is important to make sure that the edge divisions to this point are biased towards the center of the mesh: otherwise you may run into some problems later. If your mesh does not match the pictures in the tutorial, make sure to change the parameters of the mesh to make sure that they do: this might mean choosing different edges for the different biasing types than those outlined in this tutorial.
You will have to try how the edges in your model are oriented.
Some of the edges in your mesh seem to have the wrong bias type. For example the vertical edge seems to have small-large-small instead of small-large.

Quote:
Select Behavior > Hard
Try to apply this to all edge sizings.

From time to time, it might be helpful to right-click on the mesh and clear the generated data.
flotus1 is offline   Reply With Quote

Old   June 3, 2013, 18:32
Default
  #4
New Member
 
Join Date: May 2013
Posts: 3
Rep Power: 12
alcrlpe is on a distinguished road
The problem was not in the meshing process (bias where right), but in the geometry. When creating 4 quadrants, I didn't split the axis, I did it altogether, and it looks it's wrong.

Anyway, thanks for the answer!
alcrlpe is offline   Reply With Quote

Old   September 12, 2016, 13:34
Default
  #5
New Member
 
Join Date: Sep 2016
Posts: 3
Rep Power: 9
Nour1315 is on a distinguished road
Hello, I am having the same problem, could you explain how you solved it?
Nour1315 is offline   Reply With Quote

Old   September 12, 2016, 16:31
Default
  #6
New Member
 
Join Date: Sep 2016
Posts: 3
Rep Power: 9
Nour1315 is on a distinguished road
nvm it works by selecting the lower of overlapping edges
Nour1315 is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[snappyHexMesh] SnappyHexMesh for internal Flow vishwa OpenFOAM Meshing & Mesh Conversion 24 June 27, 2016 08:54
[snappyHexMesh] No layers in a small gap bobburnquist OpenFOAM Meshing & Mesh Conversion 6 August 26, 2015 09:38
Moving mesh Niklas Wikstrom (Wikstrom) OpenFOAM Running, Solving & CFD 122 June 15, 2014 06:20
Convergence moving mesh lr103476 OpenFOAM Running, Solving & CFD 30 November 19, 2007 14:09
Problem importing GAMBIT mesh to Ansys geometry David G. CFX 0 June 19, 2005 06:01


All times are GMT -4. The time now is 01:05.