High Cp value around trailing edge

[Mike Novikov]

Good evening, colleagues! I was just wondering if anyone has an idea for how to avoid high Cp values around the wingtip near the trailing edge.
I know it can happen in real conditions.
It's bothering me, so maybe there's a way to get rid of it.
Re = 1e+07
AoA = 6 deg

[Miguel Aguirre]

Hello Mike,

I simply avoid using flat tips whenever possible. Instead, I use rounded tips with multiple cap end panels since the pressure distribution is identical to RANS (except on the upper surface, towards the trailing edge of the tip, where the tip vortex is formed). In the attached file you have an example of rounded tip (observed from the botom)

Best

Miguel

[Rob McDonald]

Those high Cp's around the wingtip are part numerical and part physical...  You can mostly ignore them.

Otherwise, the best way to avoid them is to use the thin-surface mode for a wing.

Rob

[Mike Novikov]

Hi, Miguel. Thank you for the advice, but for my case, it became even worse(
Looks like
1 Tip Cap Type: flat with cap tess 2 is the best option from the Cp perspective
2  Tip Cap Type: Round Ext TE with cap tess 6 is the best option from the convergence perspective

Thank you!

понедельник, 12 января 2026 г. в 17:33:30 UTC+4, Miguel Aguirre:

[Mike Novikov]

Thank you, Rob.

Noted!

понедельник, 12 января 2026 г. в 21:55:26 UTC+4, Rob McDonald: