Vibration Analysis of Dolid-Fluid Interaction to Improve the Aerodynamic Performance of Airfoils with Deflectable Skins

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Alami, Nariman | 2008

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 39248 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Darbandi, Masoud
Abstract:
Progress aerodynamic and structural applications has lead to solid-fluid interaction (SFI) engineering. One major application of SFI is to improve of aerodynamic characteristics of airplanes. One option is to use elastic shells.this field of study is so novel and a challenge for future researches. This what current thesis is focused on We use numerical simulation in both fluid and solid parts.In other word, we employ the finite –element method to solve the solid mechanics governing equation and the finite volume element method to treat the fluid dynamics governing equations. The fluid governing equations are 2D navier- stokes equations and the solid part is the 1D Euler – Bernoulli equations for beam.to construct our moving grid, a dynamic hybrid grid is used to decretive the morphing domain. The current results indicate that the airfoil's morphing shell can reduce the drag coefficient up to 10% and increases L/D up to 9% at Reynolds number of 10,000.
Keywords:
Finite Volume Method ; Finite Element Method ; Incompressible Flow ; Arbitrary Lagrangian-Eulerian Method ; Fluid-Solid Interaction ; Morphing Skin ; Euler-Bernoulli Theory

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