Transient hydroelastic analysis of surface-piercing propellers

Abstract

A coupled boundary element method finite element method (BEMFEM) is presented for the transient hydroelastic analysis of surfacepiercing propellers (SPPs). The method is used to help the design and analysis of three different size SPPs that deliver a constant advance speed of 25.72 m/s (50 knots). Numerical validation studies are shown. The mean and unsteady responses of the three SPPs are presented. Finally, limitations of the BEM-FEM method are discussed. 100L upper and lower tanks. The working fluids were water and liquid nitrogen. Experiments with emphasis on periodical shedding of cloud cavitation were performed for three channels, 20, 30 and 60 mm in width, and two hydrofoils, 20 and 60mm in chord length LC. Inlet velocity uin and cavitation number ? were varied between 3.8 and