[myusername]

Hello,

I put a prism layer around my blades, but that always results in bad element pyramids. I extruded the Trailing edge with a surface so the prisms go into the Volumemesh, as I read here in the forum.
I tried stair stepping but that results still in pyramids and also big changes of element size from the first prism layer directly to the tets.

I saw pictures where the Prismlayers dont all collapse into one line but keep there form and just shrink towards the back end, for example here: http://www.cfd-online.com/Forums/ans...dges-icem.html but that looks differnt to mine.




Or is it possible to just cut them of all straight at the and and continue with tets from there?

I also tried creating only one layer and splittling it, but that again results in the same pyramids, except if I chose "dont split pyramids" but then the knots arent connected and I'm guessing thats not so good either...

my max internal angle was 180 and fillet ratio I tried 1 and 0.1. ortho weight is 0.5 and for min quality I tried 0.01 and 0.00001


thanks a lot for any suggestions

[myusername]

I noticed, the pyramids arent even that bad (quality > 0.15) but next to the pyramids there are Tets which have almost the same shape and thus bad quality (different way of calculating quality?) of below 0.05

smoothing didnt really help


edit: one more detail I noticed, dont know if its relevant: If I check the mesh for single edges it always marks the last line of elements of the baffle-surface. If I delete them as suggested by ICEM and check again, it will mark the next line.

[jgross]

Hi,


Did you manage to figure it out?



I would like to do the same for an impeller geometry with a sharp cutting edge.





I would like to avoid doing a C-Grid, as there is good amount of work necessary for that I would like to avoid for an automated process.


Regards,
James