For vessels moving at slower speeds, the frictional resistance contributes up to 80% of the total resistance, demanding a reduction in it. In the BDR/ALS technique, to reduce frictional resistance, the air is injected below the moving body, which is one of the active and interesting research topics. In this work, to reduce the total resistance and the energy required to run a ship, experimental investigations were performed on a 1:23 scaled model of 8000 Tonnes Deadweight Bulk Carrier for a Froude number range of 0.06 to 0.18. For each speed of operation, consequences of different air injection rates of 0.5 to 3.0 CFM, and different sizes of injection holes were thoroughly investigated. With the injection holes of 2mm and 1mm in diameter, the maximum savings in the energy of 29.2% and 25.1% were observed at the Froude numbers of 0.09 and 0.11, respectively.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Experimental investigation on ship’s model in carrying out energy economics of BDR/ALS methodology


    Contributors:

    Published in:

    Ships and Offshore Structures ; 17 , 7 ; 1437-1446


    Publication date :

    2022-07-03


    Size :

    10 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




    WEIGHT CARRYING DEVICE FOR ADJUSTING MODEL SHIP'S MOMENT OF INERTIA

    SONG YUN YOUNG / KIM MYEONG SEOK / YOO SUN MO et al. | European Patent Office | 2024

    Free access


    Experimental research on LNG ship’s mooring

    Sun, Jibin / Lian, Shishui / Liu, Chen | SPIE | 2022


    WASTED ENERGY SAVER FOR SHIP'S ENGINE

    ABULABAN TARIK ALI MOHAMMED | European Patent Office | 2017

    Free access

    Ship's rudder

    European Patent Office | 2022

    Free access