Experimental Investigation For Various Propeller Tunnel Geometry Effect On Propulsion Performance

J. Ocean Eng. Technol. 2007;21(3):40-45.

Suh, Sung-Bu;Park, Choong-Hwan;Moon, Il-Sung;

Department of Naval Architecture and Ocean Engineering, Dongeui University;Department of Ship Technology, RIMS;Maritime & Ocean Engineering Research Institute(MOERI), KORDI;

프로펠러 보호터널 형상이 추진성능에 미치는 영향에 대한 실험적 고찰

서성부;박충환;문일성;

동의대학교 조선해양공학과;중소조선연구원 선박기술부;한국해양연구원 해양시스템안전연구소;

Keywords: Protect tunnel, Circular water channel, Open water performance, Thrust coefficient, Torque coefficient

핵심용어: 보호터널, 희류수조, 단독성능, 추력계수, 토크계수

Abstract

This study was performed to investigate the effect of various propeller tunnel shapes on the propulsion performance of a fishing boat. The propeller tunnel reduces the problem resulting from the open propeller accidentally catching the waste net and cable on the sea, as well as increasing the cruising speed. For 3 different tunnel geometries, the model test is conducted in the circular water channel, and the potential based panel method was applied to analyze the hydrodynamic characteristics of propeller. Also, both results are compared with each other to represent the difference between results of the model scale test and the potential theory. It is expected that these results could be referenced in the design of the propeller tunnel in consideration of the hydrodynamic interaction between the propeller and the tunnel.