Abstract
In the present study, the effect of the duct angle and propeller location on the hydrodynamic characteristics of the ducted propeller using Reynolds-Averaged Navier Stokes (RANS) method is reported. A Kaplan type propeller is selected with a 19A duct. The ducted propeller is analyzed by three turbulence models including the k-ε standard, k-ω SST and Reynolds stress model (RSM). The numerical results are compared with experimental data. The effects of the duct angle and the location of the propeller inside the propeller are presented and discussed.
Highlights
In recent year, considerable efforts have been made to improve the propulsive efficiency of the propeller on the ships
The Acceleration duct has a flat surface on the outside of the curve in the inner area
The numerical analysis employed to the ducted propeller performance under open water test condition (Yu et al, 2013)
Summary
Considerable efforts have been made to improve the propulsive efficiency of the propeller on the ships. The numerical analysis employed to the ducted propeller performance under open water test condition (Yu et al, 2013). (Xueming et al, 2015) analyzed the hydrodynamic performance of the ducted propeller by different turbulent models. They investigated the open water performance of the Ka-series propellers at various pitch and expanded area ratios in combination with the 19A duct by employing the panel method PAN-MARE and the RANSE code ANSYS-CFX. They presented the pressure distribution on the propeller surfaces, the pressure and the velocity vector distribution of the flow field around the ducted propeller. (Majdfar et al, 2015 and 2017) presented the numerical results of the hydrodynamic characteristics of a ducted propeller operating in oblique flow. The effects of duct angle relative to propeller on hydrodynamic characteristics are studied
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