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-   -   [GAMBIT] 2D airfoil meshing help (https://www.cfd-online.com/Forums/ansys-meshing/102588-2d-airfoil-meshing-help.html)

ACER May 29, 2012 10:14

2D airfoil meshing help
 
Hi everyone..

Could someone please help me on meshing a 2Dairfoil in gambit...ive attached a boundary layer and used sizing functions at the trailing edge vertex and airfoil edges but i always keep having highly skewed meshes at the tip..even though i decrease the min size..i have tried everything kinda..is there something im missing??? i would really appreciate any kind of help and advise on hw to improve the mesh overall....


URL TO PICS
http://img819.imageshack.us/img819/7842/71402200.png
http://img823.imageshack.us/img823/9931/49230210.png
http://img600.imageshack.us/img600/2302/83140483.png
http://img51.imageshack.us/img51/1433/65923687.png

thank you

-mAx- May 29, 2012 10:31

split your domain for having more control of your mesh.
For istance you can create an ellipse which surrounds your airfoil.
Split your domain with your ellipse. Be sure the ellipse has an hollow (your airfoil)
Now you can mesh your ellipse surface .

ACER May 29, 2012 10:55

thanks for the reply Max...ill give this a try

thank you

ACER May 30, 2012 14:10

Hi MAx

I have tried your suggestions but doesnt seem to work really...I have actually seeded each surface of my airfoil with up to 1000 seeds to be able to have a fine mesh near the region including a sizing function but still ending up with skewed meshes at the trailing edge...

thank you

-mAx- May 31, 2012 01:44

picture please ;)

ACER May 31, 2012 16:49

thanks again max for ure reply

heres the pic

ive made the inner box as close as possible to the airfoil but still gettin skewed that the end

http://img221.imageshack.us/img221/626/62801430.png
http://img205.imageshack.us/img205/7158/48309241.png

would really appreciate any kind of feedbackk

thank you

-mAx- June 1, 2012 02:00

your box is to close from airfoil
Use an ellipse instead of the box


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