The improvement of the performance and efficiency of hydrodynamic control surfaces such as ship rudders is a long sought goal, given economic considerations and the ecological impact of the shipping sector. One major problem limiting the performance of rudders is flow separation at high deflection angles. In this paper, we address this problem using active flow control, a technique first proposed in aerodynamics. A small scale and a large-scale rudder model with realistic geometry were manufactured and equipped with an active flow control system employing the method of pulsed blowing. The actuation system was extensively characterized. Towing tank experiments were conducted up to a Reynolds number of $1.33\times 10^6$ 1.33 × 10 6 . Data included force measurements for the large-scale model and flow field and force measurements for the small-scale model. The impact of the active control on the flow fields around the small-scale model was characterized. The delay of the flow separation towards a higher angle of attack, accompanied with an increase of the maximum lift forces, was demonstrated for both models.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Active flow control applied to a ship rudder model


    Contributors:

    Published in:

    Publication date :

    2024-01-02


    Size :

    19 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Active rudder aids ship maneuverability

    Beckman, W.C. / Berg, J.A. | Engineering Index Backfile | 1963


    SHIP RUDDER

    ITO MITSUHARU | European Patent Office | 2023

    Free access

    SHIP RUDDER

    ARII TOSHIHIKO / HOSOGAYA KAZUYOSHI / TOMITA KAZUSHI | European Patent Office | 2015

    Free access

    SHIP RUDDER

    MAKINO KOJI / MASUDA SEIJI / FUJISAWA TAKEHARU et al. | European Patent Office | 2017

    Free access

    SHIP RUDDER

    IKEDA YOSHIHO / HIGAKI YUKITO | European Patent Office | 2017

    Free access