...Roberto Muscari; Mario Felli; Andrea Di Mascio The flow in the stern region of a fully appended hull is analyzed by both computational and experimental fluid dynamics. The study is focused on the velocity field induced by the rotating propellers. Measurements have been performed by laser Doppler...

...Prachakon Kaewkhiaw; Yodchai Tiaple; Pramote Dechaumphai; Varangrat Juntasaro The realistic simulation of cavitation on a marine propeller is important for the efficient design of the propeller. However, the flow characteristic that occurred on the marine propeller is complicated and difficult...

...Bin Ji; Xianwu Luo; Xin Wang; Xiaoxing Peng; Yulin Wu; Hongyuan Xu The cavitating flows around a highly skewed model marine propeller in both uniform flow and wake flow have been simulated by applying a mass transfer cavitation model based on Rayleigh–Plesset equation and k - ω shear stress...

...Eric W. M. Roosenboom; Andreas Schröder The flow phenomena in the slipstream around an eight-bladed propeller at thrust reverse conditions are analyzed using double stereoscopic particle image velocimetry in the Airbus Low-Speed Wind Tunnel Facility in Bremen, Germany. Several planes are scanned...

... combined with a finite rate mass transfer model. The pressure-velocity coupling is handled using a PISO algorithm with a modified pressure equation for improved stability when the mass transfer terms are active. The computational model is first applied to a propeller flow in homogeneous inflow in both...

...Bu-Geun Paik; Kyung-Youl Kim; Jong-Woo Ahn The objective of the present study is to investigate propeller wake using particle image velocimetry (PIV) technique with bubble type of tracers, naturally generated by the decrease in the static pressure in a cavitation tunnel. The bubble can be grown...

... becomes v 2 δ ° = Ω r − w 2   tan ( β 2 ′ + δ ° ) where β 2 ′ = tan − 1 ( Ω r − v 2 w 2 ) 05 02 2008 10 07 2008 23 09 2008 blades boundary layers diffusion propellers rotors vortices...

...Evert-Jan Foeth; Tom van Terwisga; Cas van Doorne A three-dimensional twisted hydrofoil with an attached cavitaty closely related to propellers was observed with a high-speed camera at the University of Delft Cavitation Tunnel. Reentrant flow coming from the sides of the cavity aimed at the center...

...Stephen A. Huyer; David Beal; Daniel Macumber; Anuradha Annaswamy The unsteady vortex flows produced by biologically inspired tail articulation are investigated. The application is to provide active means of reducing tonal noise due to upstream wake interaction with downstream propellers...

...David H. Bridges; Martin J. Donnelly; Joel T. Park In order to decelerate a forward-moving submarine rapidly, often the propeller of the submarine is placed abruptly into reverse rotation, causing the propeller to generate a thrust force in the direction opposite to the submarine’s motion...

...Y. L. Young; Y. T. Shen The motivation of this work is to develop a numerical tool to explore a new propeller design with dual-cavitating characteristics, i.e., one that is capable of operating efficiently at low speeds in subcavitating (fully wetted) mode and at high speeds in the supercavitating...

...Ghanem F. Oweis; David Fry; Chris J. Chesnakas; Stuart D. Jessup; Steven L. Ceccio The vortical flow in the tip region of a three-bladed rotor was examined using particle imaging velocimetry (PIV). The vortex forming at the tip of the un-ducted propeller was compared to the tip-leakage vortex...

...Jules W. Lindau; David A. Boger; Richard B. Medvitz; Robert F. Kunz A Reynolds-averaged Navier-Stokes computational model of homogeneous multiphase flow is presented. Cavitation driven thrust and torque breakdown over a wide range of advance ratios is modeled for an open propeller. Computational...

...Shin Hyung Rhee; Takafumi Kawamura; Huiying Li The cavitating flow around a marine propeller is studied using an unstructured grid based Reynolds-averaged Navier-Stokes computational fluid dynamics method. A cavitation model based on a single-fluid multi-phase flow method is implemented...