ASYMMETRIC FAN-SHAPED DUCT FOR ENERGY SAVING OF SHIP

摘要

The present invention provides an asymmetric fan-shaped stern duct for energy saving of a ship, which includes: a duct which is located on an upper part of a center line of a fan-shaped propeller shaft, and is installed to be asymmetric to a starboard side around a center line; and two pin structures which are installed to meet a left end and a right end of the duct by being spread to the direction of the duct at the center line of the propeller shaft. According to the present invention, the asymmetric fan-shaped stern duct can save energy of the ship through interaction between the fan-shaped duct and the pin structure, and more particularly, can improve hull resistance performance by rectifying and accelerating flow of a stern flowing field by operation of the duct, and can improve propeller propulsion performance through wake variation flowing into the propeller by operation of the pin structure, and furthermore, can improve propeller efficiency by making rotational flow in advance.