[majkers]

Hey guys,

I am currently trying to mesh a 3D wing inside a sphere domain.

I have come across some problems. Namely I am having troubles with O-grid around the wing. Please see the attached screenshots.

I attached all the edges to their correspoding curves after i had created the o-grid around the whole wing. As you can see in the picture Mesh_Problem something went wrong with the O-grid around trailing edge. If I move the blocks, it will change a bit around there but I will get elements with negative determinant. Anybody knows how to solve it? Should I attach some more pictures?

Michael

[bluebase]

Hi Michael,

more pictures of the area of trouble would definitely help.
The counts on the blocking in the last picture don't match. Can you show a picture with "scan plan"?

i would also try to assiociate the trailing block face directly to the trailing edge surface.

With regards,
Sebastian

[majkers]

Hey Sebastian !

Thank You for Your reply !

I tried to associate the block's surface to the trailing edge's surface but it didn't change anything.

Of course, I see no problem in adding more pictures but first I need to ask You to be more precise. Could You please tell me what do You mean by saying the block count don't match? And the other thing is that I don't actually understand what is that so called "scan plan". If You are willing to answer those short questions, I will add other pictures right after Your reply.

Thank you

Michael

[bluebase]

Hello Michael,

have a look at your picture:

blockcount.png

On one side there are many elements. On the other side only a few hugh elements. From this picture, i cannot get an idea how these are attached, or, whether i miss something.


The feature scan planes (sorry forgot they named it in plural) is found in the context menu of premesh:
scanplanes.png

You can inspect planes of element by selecting an edge which is normal to a wanted plane. The you can move the plane element by element layer on that edge.
This tool might helping in finding a problem in the associations.

With regards,
Sebastian

[majkers]

Hey Sebastian!


I am adding more pictures as You requested.

In the picture called Dissassociated You can see what happens when I dissassociate the block's edge from the geometry. To be more specific from the curve representing the trailing edge. Its obvious that this particular association causes the problem but I have to admit I have no idea why.

The other pictures captures the scan plans.

Michael

[majkers]

I am also adding the picture capturing the association of the blocks around the wing.

Michael