[Ibrahim_Rihani]

Dear all,

I am trying to make hexa mesh for the DTMB hull using ICEM CFD, for different case study, I will use FLUENT as solver,

The main problem that I have a negative elements and the angel is zero,
I tried make O grid in the stern check double vertices,no solution!!



I did the main blocks and every thing seem to all right except those elements, I am trying since 6 months to find solution before I decide to post,


I appreciate your help,if you have experience how to solve it or if you had same problem please share the solution with me.

[bluebase]

Could you share a quality histogram and some screenshots of the region with problems?


If there is a zero angle, there might be the chance that you squashed a block. Such block would have almost zero thickness, und would look like a thin layer when you display only blocks.

[Ibrahim_Rihani]

Thank you for your reply,


The bad elements area is near the bow here is below pic


https://drive.google.com/file/d/1ZRG...ew?usp=sharing


https://drive.google.com/file/d/1Zgd...ew?usp=sharing

[bluebase]

You obviously know about scan planes. Investigate that region with bad elements further, and maybe share screenshots from a couple of different views.



Investigate how the respective blocks are formed. Why deviate they from the optimal cube shape. Which edges intersect others.