The present invention relates to a method for reducing the overall pressure fluctuations by controlling the phase difference of pressure fluctuation time series of the two propellers of a twin-screw vessel, wherein with respect to controlling the phase difference of the pressure fluctuation time series, the optimal relative angles of rotation of the two propellers are calculated, and the results are then stored and referenced to maintain the rotational state of the propellers at the optimal state. The present invention can effectively and in real-time reduce, in accordance with sailing conditions of the vessel, pressure fluctuations induced on the hull surface due to propeller cavitation.
La présente invention concerne un procédé permettant de réduire les fluctuations de pression globales en réglant la différence de phase de la série temporelle de fluctuation de la pression des deux propulseurs d'un navire à deux hélices, les angles relatifs optimaux de rotation des deux propulseurs étant calculés par rapport au réglage de la différence de phase de la série temporelle de fluctuation de pression, et les résultats étant ensuite stockés et référencés pour maintenir l'état de rotation des propulseurs à l'état optimal. La présente invention peut réduire efficacement et en temps réel, en fonction des conditions de navigation du navire, les fluctuations de pression induites sur la surface de la coque dues à la cavitation des propulseurs.
본 발명은 쌍축선의 두 프로펠러에서 유기된 변동압력 시간이력의 위상차를 조절함으로써 전체 변동압력을 저감하되, 변동압력 시간이력의 위상차 조절은 두 프로펠러의 상대 회전각의 최적 상대 회전각을 계산한 후 그 결과를 저장하고 참고하여 프로펠러 회전 상태를 최적 상태로 유지하며, 프로펠러 캐비테이션에 의해 선체 표면에 유기되는 변동압력을 선박의 운항조건에 따라 실시간, 효율적으로 저감할 수 있는 방법에 관한 것이다.
METHOD FOR REDUCING HULL PRESSURE FLUCTUATIONS BY CONTROLLING ANGLES OF ROTATION OF PROPELLERS OF TWIN-SCREW VESSEL
PROCÉDÉ DE RÉDUCTION DES FLUCTUATIONS DE PRESSION DE LA COQUE EN RÉGLANT LES ANGLES DE ROTATION DES PROPULSEURS D'UN NAVIRE À DEUX HÉLICES
쌍축선의 프로펠러 회전각 조절을 통한 선체 변동압력 저감 방법
2018-06-28
Patent
Electronic Resource
Korean
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
European Patent Office | 2018
|European Patent Office | 2018
|European Patent Office | 2019
|Engineering Index Backfile | 1887