Influence of the skew angle on the hydroelastic behaviour of a composite marine propeller

This paper discusses the influence of the skew angle on the hydroelastic behaviour of a composite marine propeller. Recently, propellers have been made of composite materials because of their useful acoustic properties and because they are lightweight. However, the flexibility of composites causes much deflection in comparison with conventional materials and a change in the hydroelastic performances of propellers. In this research, the hydroelastic behaviour of a propeller is analysed for various skew angles using the prepared software code, namely the boundary element method–finite element method hydroelastic code, in which the hybrid boundary element method–finite element method is used. The hydrodynamic load acting on the propeller is determined by the boundary element method, and the deformed propeller is then obtained by the finite element method. The iterations between the boundary element method and the finite element method are repeated until the deflection and hydrodynamic characteristics (the thrust, the torque and the efficiency) of the propeller converged. The numerical results indicate that the skew angle affects the performance of the propeller and the stress field. As the skew angle increases, the maximum deflection of the blade increases; however, the thrust coefficient and the torque coefficient decrease.

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  • English

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  • Accession Number: 01483914
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 16 2013 1:52PM