GRAVITY EFFECTS ON THE COUPLED FREQUENCIES OF A 2D FLUID–STRUCTURE PROBLEM WITH A FREE SURFACE

This paper discusses an experimental study of the coupled frequencies of a flexible structure partially immersed in a fluid in a finite container, in two dimensions, with non-negligible gravity effects. The results are compared with those obtained using a theoretical linear model including surface tension and meniscus length. The good agreement obtained validates this theoretical model. Curves are then presented for the coupled frequencies vs the fluid level in this container for various values of the gravity.