Study of the vibrational behavior of a plate exposed to a fluid flow along one of its faces

Vibration of a plate with fluid flow on one face, as encountered in the aerospace industry, is discussed. The risk of instabilities due to gas-structure coupling is considered. Aeroelastic and hydroelastic models are examined. The Dowell model is adopted and a numerical example of a 0.2 m x 0.2 m plate is presented. A water flow and two thickness are assumed. The developed formula shows the presence of instability characterized as divergence. It is recognized that the velocity limits calculated are rough approximations.