In order to study the influence of energy-saving conduit on the hydrodynamic performance of the aft propel-ler and the vibration level of the ship's hull,CFD method is applied to numerically simulate the ship-propeller-energy-sav-ing conduit model.Calculate the change rule of energy-saving conduit pressure under four working conditions,namely,full load(direct sailing,steering)and ballast(direct sailing,steering).Comparing the hydrodynamic performance of the aft propeller before and after installing the energy-saving conduit and the pressure distribution on the blade surface,the re-sults show that the energy-saving conduit increases the thrust by 7.87％,the torque by 6.35％,and the efficiency of the propeller is improved,and the energy-saving efficiency meets the requirements.At the same time,the pulsation pressure of a series of monitoring points is arranged and measured,and the rule of change is obtained with the distance of the propel-ler.Under the action of the energy-saving conduit,the maximum amplitude of the pressure at each monitoring point de-creases,the pressure difference decreases,and the vibration level of the hull decreases.
energy saving conduithydrodynamic performancefluctuating pressurepropellerCFD
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NSTL
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