The unsteady motion of a two-dimensional aerofoil in incompressible inviscid flow

Author:

Basu B. C.,Hancock G. J.

Abstract

A numerical method has been developed for the calculation of the pressure distribution, forces and moments on a two-dimensional aerofoil undergoing an arbitrary unsteady motion in an inviscid incompressible flow. In a discussion of the appropriate Kutta condition(s) it is argued that two Kutta conditions are required to obtain a satisfactory solution. The method is applied to (i) a sudden change in aerofoil incidence, (ii) an aerofoil oscillating at high frequency and (iii) an aerofoil passing through a sharp-edged gust.

Publisher

Cambridge University Press (CUP)

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics

Reference8 articles.

1. Vooren, A. I. Van Der & Vel, H. VAN DER 1964 Unsteady profile theory in incompressible flow.Arch. Mech. Stosowanej 3.

2. Maskell, E. C. 1972 On the Kutta–Joukowski condition in two-dimensional unsteady flow. Unpublished note, Roy. Aircraft Establishment, Farnborough.

3. Giesing, J. P. 1968 Non-linear two-dimensional unsteady potential flow with lift.J. Aircraft 5 (2), 135.

4. Hess, J. L. & Smith, A. M. O. 1967 Calculation of potential flow about arbitrary bodies.Prog. Aero. Sci. 8,1.

5. Basu, B. C. & Hancock, G. J. 1978 Two dimensional aerofoils and control surfaces in simple harmonic motion in incompressible inviscid flow.Aero. Res. Coun. Current Paper no. 1392.

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