SOLUTION
  title=' Acoustic analysis'
  # Calculate the the six perfect rigid body modes of the structure.
  # Three translation and three rotation.
  case rigid
      geometric_rigid_body_modes
  case flex
    eigen
    nmodes 20
    # Turn on wet-modes calculation that adds the mass of
    # surrounding fluid to the structure
    fluidloading=yes
END

GDSW
END

FILE
  geometry_file 'floatingCylinder.exo' # Geometry of a submerged cylinder
END

LOADS
END

PARAMETERS
  # Specify that 6 rigid modes are expected in the structure.
  num_rigid_mode 6
END

BOUNDARY
  # Set pressure to zero on outer boundary of the acoustic domain
  sideset 102
    p=0
  # This is the free surface of the fluid domain.  Slosh boundary condition
  # approximates a free surface
  sideset 103
    slosh = 2.59e-3
END

TIED DATA
  # Attach the structural and fluid domains
  surface 101, 1
  search tolerance = 2
END

OUTPUTS
  disp
END

ECHO
END

MATERIAL steel
  e = 3.0e7           # Young's modulus
  density = 7.324e-4
  nu = 0.3            # Poisson's ratio
END

MATERIAL fluid
  acoustic # specifies this material as an acoustic fluid
  density 3.46822e-006
  c0 22878 # sound speed
END

BLOCK 1
  # The Nquad is a is quadrilateral shell element with membrane and bending response
  material = steel
  thickness = 1.3644
  nquad
END

BLOCK 2
  material = steel
  thickness = 1.3644
  nquad
END

BLOCK 101
  # Specify that the topology of block 101 must be a 4-noded tet
  tet4
  material = fluid
END