[PSYMN]

Build topology is explained in the help.

If you have real gaps, there are many tools to fix it. If you really just want to ignore the little gaps, you could set a larger tollerance... Perhaps leave the intial tolerance as it is, but then put a larger size further down next to "single edge clean up".

You are saying two things... Do you need finer mesh near the trailing edge or do you need control over the node distribution along the curves...? These are not the same thing. With Octree tetra you can refine the mesh near the trailing edge in a number of ways. Try setting a smaller size on the curve and setting the "width" to something like 3. This will mean to use that approximate size for at least 3 elements out into the volume. You can do the same thing on surfaces. If you really want to control the max size in a volume you can create density lines or boxes (under the mesh tab). These allow you to define the volume with points or around entities and then set the max size in that volume along with the transition rate away from that volume...

If you actually want to set sizes on curves, as I said before, you should use the patch dependent methods. You will need a cleaner model and will need to start with a surface mesh. I do not recommend it for new users. The Octree tetra is more robust and easier to setup.

[sfs]

Thanks Simon once again for ur reply

Ya i am trying to create finer mesh near the outer boundary of the flaps & TE of the wing and as we move on from geometry little bit courser throughout the volume. So u mean to say that i shud define the no: of nodes and tetra width size in curve mesh setup with patch independent method....

Lastly when i am defining the surface mesh setup parameters do i need to define the min size limit value also, if so can u plz tell me what would be order of that value...

[PSYMN]

The min size on local entities such as surfaces or curves is only looked at if you are use the global curvature and proximity refinement... The global setting allows you to set a min size limit for the model. This works as a limit to prevent the mesh from refining smaller than you would like. If you want the mesh to get smaller than the global mesh size in a certain area, you can set a local min size.

This is not something you would normally need to use, but the option is there.

[sfs]

Thanks simon

[sfs]

Thanks Simon for ur response