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Faculté des Sciences appliquées
Faculté des Sciences appliquées
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Master thesis and internship[BR]- Master's thesis : Simulation of a wingtip vortex flow with Linear Eddie Viscosity turbulence models at Re = 4.6E6 and Re = 1.2E6[BR]- Integration Internship

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Tonioni, Niccolò ULiège
Promoteur(s) : Terrapon, Vincent ULiège
Date de soutenance : 5-sep-2022/6-sep-2022 • URL permanente : http://hdl.handle.net/2268.2/16121
Détails
Titre : Master thesis and internship[BR]- Master's thesis : Simulation of a wingtip vortex flow with Linear Eddie Viscosity turbulence models at Re = 4.6E6 and Re = 1.2E6[BR]- Integration Internship
Auteur : Tonioni, Niccolò ULiège
Date de soutenance  : 5-sep-2022/6-sep-2022
Promoteur(s) : Terrapon, Vincent ULiège
Membre(s) du jury : Hillewaert, Koen ULiège
Hahn, Marco 
Langue : Anglais
Mots-clés : [en] CFD
[en] Turbulence Closure Models
[en] RANS
[en] LES
[en] WIngtip flow
Discipline(s) : Ingénierie, informatique & technologie > Ingénierie aérospatiale
Centre(s) de recherche : Multiphysics and Turbulent flows comutations laboratory - University of Liège
Public cible : Chercheurs
Institution(s) : Université de Liège, Liège, Belgique
Diplôme : Master en ingénieur civil en aérospatiale, à finalité spécialisée en "aerospace engineering"
Faculté : Mémoires de la Faculté des Sciences appliquées

Résumé

[en] This work studies the accuracy of Linear Eddie Viscosity models on the prediction of wingtip vortex flow. The geometry selected for the study is a NACA-0012 half wing mounted at the wall, with a rounded end cap and trailing edge, inclined by 10° at its quarter chord.

Computations of the flow were conducted using the open source software SU2. Two turbulence closures were investigated: the Negative Spalart-Allmaras and the Menter's Shear Stress Transport models. The flow was considered at two Reynolds numbers : Re = 4.3 x 10E6 and Re = 1.2 x 10E6. To study the models' accuracy, the initial objective of the work was to produce high-fidelity LES data using the software ARGO provided by Cenaero. However, due to the setup of the simulations and the computing time requirements, we fail to obtain LES simulations of the entire wing. Therefore, the computed flow is compared against the experimental and numerical data found in the literature.

The results showed that LEVM could characterize the main vortical structures' topology and surface flow quantities. However, they fail to predict the evolution of the mean quantities on the vortex core. This divergence between the numerical simulations and the experimental results was associated with the eddie viscosity, which caused a diffusion of the mean quantities, and the models' assumptions, which cannot correctly represent the Reynold stress and strain rate tensors misalignment observed in the experimental data.

Although we could not fulfill the project's initial objective, we were still able to provide indications of possible future work based on comparing the RANS results with the reference experimental and numerical data.


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Auteur

  • Tonioni, Niccolò ULiège Université de Liège > Master ingé. civ. aérospat., à fin.

Promoteur(s)

Membre(s) du jury

  • Hillewaert, Koen ULiège Université de Liège - ULiège > Département d'aérospatiale et mécanique > Design of Turbomachines
    ORBi Voir ses publications sur ORBi
  • Hahn, Marco Red Bull Technology
  • Nombre total de vues 57
  • Nombre total de téléchargements 124










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