Accurate High-Order Wall-Modeled Large Eddy Simulation of the High-Lift Common Research Model

View Video Presentation: https://doi.org/10.2514/6.2023-3976.vid This paper presents recent enhancements and assessment of a wall-modeled large eddy simulation (WMLES) approach in a high-order mixed-mesh flow solver, hpMusic, being developed at the University of Kansas. The enhancements are needed to obtain consistent and accurate predictions for one of the benchmark problems from the AIAA 4th High-lift Prediction Workshop (HLPW-4). To minimize data communications on large CPU and GPU clusters, the wall model data exchange location is the 1st or 2nd element away from solid walls. This decision dictates that the aspect ratio of near-wall elements be close to 1 to achieve accurate wall shear stress computations. In addition, the numerical dissipation embedded in an implicit LES (ILES) approach is insufficient to stabilize WMLES due to the severe under-resolution of the near-wall turbulence. A recent investigation has identified the Vreman model as the best-performing sub-grid scale stress (SGS) model for high-order WMLES. A p-refinement study is conducted to assess the sensitivity of the numerical solutions with respect to the mesh resolution and solution polynomial order. Computations over several angles of attack show that the high-order WMLES approach produces consistent and accurate solutions and are capable of capturing key aerodynamic characteristics and flow features for the CRM high-lift configuration over a wide range of angles of attack including the maximum-lift condition.