mesh problem in flow region near thin structure...
 

I wondering that mesh size of flow region near thin structure would make problem...??.

Such as photo i attached, I made mesh 3mm size tetra mesh in 3mm this structure, and this case is 3-D, therefore there is one mesh in normal direction to flow direction.

In this situation, will the mesh size of this structure make any problem in flow region ???

please help me.....because this thin structure mesh size determine the whole size of my analysis case...and I have no enough time...

photo
 

this is the analysis case, please help me.....

any one know this problem....please...reply...

I dont see a thin structure or any problematic region in your picture.
Could you be more specific in your problem desctiption?

As a picture above, the word "structure" in the picture means the thin structure, and other region is fluid. so my analysis problem is the case of the fluid flow near thin structure. would the only one mesh normal to fluid flow direction make any computational results error??