PROPELLER INDUCED FLUCTUATIONS AND HULL VIBRATIONS CONSIDERING HYDROELASTICITY BEHAVIOUR

Cavitating propeller excitation and the ship structural vibration are considered. The cavitating propeller is represented with a two- dimensional inner solution in the nearfield region and with an outer solution in the farfield region. The propeller-induced pressure fluctuation is obtained by solving a boundary value problem defined on the ship hull. The ship structure is divided into substructure systems that are modeled using the finite element method. Owing to disturbances from structural vibration, the additional hydrodynamic pressure is expressed in terms of the added mass, the added damping and the added stiffness. These hydrodynamic coefficients are obtained by solving velocity potentials related to each of the "dry" structure modes.

  • Supplemental Notes:
    • Conference paper
  • Authors:
    • Feng, J Z
    • Dong, S T
  • Conference:
  • Publication Date: 0

Media Info

  • Features: References;
  • Pagination: 15p.

Subject/Index Terms

Filing Info

  • Accession Number: 00659573
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM