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An analytical method in computational aeroelasticity based on Wagner function

Shams, Sh ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. Publisher: Curran Associates Inc , 2006
  3. Abstract:
  4. This paper presents an analytical method in computational aeroelasticity for an airfoil considering two degrees of freedom (heaving and pitching) based on the Wagner integral function. In the obtained aeroelastic equations of motion, there are some integral parts that give an integro-differential system of equations. Using appropriate approximation for the Wagner function, a new form of equations can be obtained by derivation from mentioned equations. These equations are in the form of ordinary differential equations. Using the obtained equations, the flutter speed is predicted for a given airfoil and the results are compared with the results of other investigators. Also, the dynamic responses of the airfoil to a sharp-edged gust are shown in pre-flutter regime for different cases
  5. Keywords:
  6. Airfoils ; Dynamic response ; Elastic waves ; Equations of motion ; Flutter (aerodynamics) ; Ordinary differential equations ; Analytical method ; Computational aero elasticity ; Flutter speed ; Integral function ; Integral part ; Integro-differential system ; Sharp-edged gust ; Two degrees of freedom ; Aeroelasticity
  7. Source: 25th Congress of the International Council of the Aeronautical Sciences 2006, Hamburg, 3 September 2006 through 8 September 2006 ; Volume 3 , 2006 , Pages 1808-1814
  8. URL: http://www.icas.org/ICAS_ARCHIVE/ICAS2006/PAPERS/542.PDF