Learning Forum

[mohalinasre2001]

Hello Everyone,

I am currently working on my master's thesis, and I have been struggling with mesh quality for some time now. I have realised that decreasing the element sizes isn't helpful, as I have reached over 40 million elements and the skewness is still very high (0.99) for few elements (7e-4 %). The orthogonal quality is also low for 4.1e-5 % of the elements. This is a low percentage but still these elements can cause problems in my runs.

The geometry consists of a VAWT with tip sails attached to both ends of the blade. Inflation layers are added to both the blade and the tip sails.

I will attach images of the mesh showing the mesh settings on the side along with the mesh quality worksheet.

You can also find below an image showing the bad quality cells located near the inflation layers of the blades and the tip sails.

I would appreciate if anyone has a solution to this problem! Thank you in advance!!

[mohalinasre2001]

I forgot to mention that once I supressed the inflation layers, the quality turned almost perfect. So I am sure the problem is in these layers, but I am not sure how to toggle this problem.