[aero_cfd]

Hi,

I am trying to get a good quality C mesh for naca0012 but so far I don't get good aspect ratio and orthogonality .

I used same steps as in this tutorial,
https://www.youtube.com/watch?v=OhNz9OhaCRc

I do want a denser mesh and possibly use it for RANS or DES .

Any tips on how to proceed to good very high quality ?


Thank you

[shereez234]

Originally Posted by aero_cfd

Hi,

I am trying to get a good quality C mesh for naca0012 but so far I don't get good aspect ratio and orthogonality .

I used same steps as in this tutorial,
https://www.youtube.com/watch?v=OhNz9OhaCRc

I do want a denser mesh and possibly use it for RANS or DES .

Any tips on how to proceed to good very high quality ?


Thank you

Maintaining orthogonality is more difficult for sharp trailing edges. However, you could follow these tips.

1 - Use a symmetrical blocking.
2 - Use more nodes on regions of importance.( i.e. Along length of Airfoil and downstream).
3 - Make sure you have a smooth cell size change.
4 - In the farField ( outlet, Inlet, walls) use copy edge parameters - ( copy to selected edges) and then increase the spacing here. So that the very thin cell spacing close to the airfoil is not carried out to the farfield cells ( this will improve aspect ratio and orthogonality).