1. Ratings

\(P\)	:	the steady pressure in the fluid
\(p\)	:	the fluctuating pressure in the fluid,
\({X}_{f}\)	:	movements in the fluid,
\({X}_{s}\)	:	the field of movements in the structure,
\(g\)	:	gravity,
\(\varphi\)	:	the potential for fluid movements,
\({\rho }_{f},{\rho }_{s}\)	:	the density of the fluid, of the structure,
\(T\)	:	the stress tensor in the fluid,
\(\sigma\)	:	the stress tensor in the structure,
\(\varepsilon\)	:	the tensor of the deformations in the structure,
\(C\)	:	the elasticity tensor,
\(c\)	:	the speed of sound in the fluid,
\(H\)	:	the height of the fluid (or average height),
\(n\)	:	the external normal of the fluid.