EVALUATION OF TURBULENCE MODELS FOR THE PREDICTION OF VORTEX INTERACTION OVER A FIGHTER AIRCRAFT

Michel Visonneau (1) , Emmanuel Guilmineau (1) , Ginevra Rubino (1)

1 LHEEA - Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique

In the present work, the numerical simulations of flow around a fighter aircraft at several angles of attack are performed with the flow solver ISIS-CFD which is an incompressible unsteady Reynoldsaveraged Navier-Stokes method. Three RANSbased turbulence models, as the isotropic k-SST, the non-linear anisotropic EARSM, and the Reynolds stress transport model SSGLRR- and one hybrid RANS-LES model, the DDES-SST, are used. All these turbulence models are based on k- model. Forces and moments as well as flow field data are compared with experimental measurements. For the RANS-based turbulence models, the results obtained with k- SST agree relatively well with the experimental data and it is the better approach for this class of turbulence models. However, the results obtained with DDES-SST are in better agreement with experiments.

Mots clés: Turbulence models; vortex interaction; aircraft; RANS model; Hybrid RANS-LES model

Domaines: Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]; Mécanique des structures [physics.class-ph]; Mécanique des structures [physics.class-ph]; Analyse numérique [math.NA]; Calcul parallèle, distribué et partagé [cs.DC]

Michel Visonneau, Emmanuel Guilmineau, Ginevra Rubino. EVALUATION OF TURBULENCE MODELS FOR THE PREDICTION OF VORTEX INTERACTION OVER A FIGHTER AIRCRAFT. Aerospace Europe Conference - AEC2020, Feb 2020, Bordeaux, France. ⟨hal-03027410⟩