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Numerical Analysis of Incompressible Flow around an Oscillating Airfoil Using Artificial Compressibility Approach and Vorticity Confinement Method

Marami Zenouz, Sadaf | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48414 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Hejranfar, Kazem
  7. Abstract:
  8. In this study, the numerical simulation of the two-dimensional incompressible flow around an oscillating airfoil is performed. For this aim, the incompressible Navier-Stokes equations based on the artificial compressibility approach written in the arbitrary Lagrangian-Eulerian form are considered. Then, the vorticity confinement method is incorporated in the formulation and the resulting system of equations is solved by a second-order central-difference finite volume method with the controllable dissipation terms. For the time integration, the implicit dual-time stepping scheme is implemented. At first, the numerical solution of the incompressible flow over the oscillating NACA0012 airfoil without applying the vorticity confinement method is carried out to validate the solution procedure adopted. The results obtained are compared with the available numerical results which exhibit good agreement. A sensitivity study is also performed to examine the effects of different numerical parameters involved on the accuracy of the solution. Then, the incompressible flow around the oscillating NACA0012 airfoil with applying the vorticity confinement method is simulated and the accuracy of the solution algorithm in predicting the vortical flows is assessed by comparison with the experimental data
  9. Keywords:
  10. Incompressible Flow ; Artificial Compressibity Method ; Arbitrary Lagrangian-Eulerian Method ; Numerical Analysis ; Vorticity Confinement Method ; Oscillating Airfal

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