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Numerical Simulation of Viscous Compressible Flow Around an Oscilating Airfoil Using Immersed Boundary Method

Gholami Haghighi Fard, Morteza | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 50336 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Hejranfar, Kazem
  7. Abstract:
  8. In the present study, the computation of the viscous compressible flow over two-dimensional geometries is performed by using the immersed boundary method and applying a second-order finite volume scheme. For the solution of the governing equations, a uniform Cartesian grid that is not coincident with the body surface is used and the boundary conditions on the wall are satisfied by the ghost-cell immersed boundary method. The spatial discretization of the fluid equations is carried out using the second-order central difference finite volume scheme and the time integration is performed by applying the fourth-order Runge-Kutta method. To stabilize the solution algorithm and reduce unwanted numerical oscillations, appropriate numerical dissipation terms are used. To assess the accuracy and performance of the solution method applied, the two-dimensional viscous compressible flows are numerically simulated over the circular cylinder and the NACA0012 airfoil. At first, the viscous supersonic/subsonic flows are computed around the stationary circular cylinder. Then, the viscous supersonic/subsonic flows are simulated around the NACA00112 airfoil with the pitching/heaving motions. The present results are compared with the available numerical results which show good agreement
  9. Keywords:
  10. Immersed Boundary Method (IBM) ; Ghost-Cell Method ; Central Difference Finite Volume Method ; Incompressible Viscous Flow ; Oscillating Airfal

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