Ratings
=========


.. csv-table::

    ":math:`P` ", ":", "instantaneous total pressure at a point in the fluid"
    ":math:`p` ", ":", "averaged pressure over a straight section"
    ":math:`\tilde{p}` ", ":", "fluctuating pressure"
    ":math:`u` ", ":", "moving the structure"
    ":math:`\Phi` ", ":", "potential for fluid movements"
    ":math:`{\mathrm{\rho }}_{0}` ", ":", "density of acoustic fluid"
    ":math:`{\mathrm{\rho }}_{s}` ", ":", "density of the structure"
    ":math:`\omega ,f` ", ":", "pulsation, frequency"
    ":math:`c` ", ":", "speed of sound in the fluid"
    ":math:`\mathrm{\lambda },k` ", ":", "wavelength, wave number"
    ":math:`s` ", ":", "structure stress tensor"
    ":math:`\varepsilon` ", ":", "tensor of structural deformations"
    ":math:`\text{dV}` ", ":", "volume element"
    ":math:`\text{dA}` ", ":", "surface element"
    ":math:`\Sigma` ", ":", "interaction surface between the pipe and the fluid"
    ":math:`{S}_{f}` ", ":", "right section of the fluid"
    ":math:`{S}_{s}` ", ":", "straight section of the pipe"