Current Status of the Finite-Element Fluid Solver (COFFE) within HPCMP CREATE<sup>TM</sup>-AV Kestrel

Holst, Kevin R.; Glasby, Ryan S.; Erwin, Jon T.

doi:10.2514/6.2022-0024

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HLPW-4/GMGW-3: Mesh Adaptation for RANS Technology Focus Group Workshop Summary

Park

Alauzet

Michal

2023

Journal of Aircraft

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The AIAA workshop series helps guide the computational fluid dynamics (CFD) community through publicly available test cases and impartial evaluation to establish the state-of-the-art in applied CFD. A summary of the Mesh Adaptation Technical Focus Group submissions for the joint Fourth CFD High Lift Prediction and Third Geometry & Mesh Generation Workshop is provided. The Common Research Model High-Lift variant (CRM-HL) is the target of this investigation. A 2D high-lift airfoil solution verification case was extracted from the 3D CRM-HL. Low variation is shown between 2D solutions with mesh adaptation to control estimated solution interpolation and output errors. As expected, variation for these mesh adaptation techniques is larger for the 3D CRM-HL than the 2D airfoil. More importantly, the 3D mesh-adapted results have a lower variation than expert-crafted meshes of equal or larger size. Suspected multiple solutions to Reynolds-averaged Navier–Stokes with the Spalart–Allmaras turbulence model appear to resolve into a common solution with mesh resolution.

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