[ANSYS Meshing] High Mesh Skewness on Cusp Trailing Edge

jmcquaid · January 28, 2018, 01:07

Hey everyone, I've been running a quasi-2D analysis on an airfoil in CFX and for some reason I keep getting minor fluctuations in lift, drag, and moment coefficients every time a run a simulation. I think its because of the high skewness in my mesh at the cusp trailing edge. I attached a photo of the inflation layers in that area. Any idea how I can go about fixing it?

Thanks a lot!

AidealZohary · September 2, 2021, 03:12

Hi, this is an old thread. But if anyone is still interested to run a simulation on the NACA 0012, NACA 4415, FX 61-184 E420 and S1223 airfoil, please take a look at:

Numerical Investigation on the Pressure Drag of Some Low-Speed Airfoils for UAV Application.

https://doi.org/10.37934/cfdl.13.2.2948

Unsteady 3-equation k omega intermittency SST was used. Good comparison with XFOIL and experimental data. Transition features also shown through cf and cp plots.

Learn how I designed the mesh here:

https://www.youtube.com/watch?v=qZRqBu9Ss2U

Skadi · September 5, 2021, 16:12

hi jmcquaid
Check the following document.
it is a very good resource for ansys meshing

https://drahmednagib.com/CAD_2018/Le..._Meshing_2.pdf

i hope it helps

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September 2, 2021, 03:12		#2
AidealZohary New Member Aideal Zohary Join Date: Feb 2019 Location: Malaysia Posts: 28 Rep Power: 7	Hi, this is an old thread. But if anyone is still interested to run a simulation on the NACA 0012, NACA 4415, FX 61-184 E420 and S1223 airfoil, please take a look at: Numerical Investigation on the Pressure Drag of Some Low-Speed Airfoils for UAV Application. https://doi.org/10.37934/cfdl.13.2.2948 Unsteady 3-equation k omega intermittency SST was used. Good comparison with XFOIL and experimental data. Transition features also shown through cf and cp plots. Learn how I designed the mesh here: https://www.youtube.com/watch?v=qZRqBu9Ss2U

September 5, 2021, 16:12		#3
Skadi New Member Ali Join Date: Aug 2021 Posts: 4 Rep Power: 5	hi jmcquaid Check the following document. it is a very good resource for ansys meshing https://drahmednagib.com/CAD_2018/Le..._Meshing_2.pdf i hope it helps