This paper predicts the speed-power-rpm relationship in regular head waves using various indirect methods: load variation, direct powering, resistance and thrust identity, torque and revolution, thrust and revolution, and Taylor expansion methods. The subject ship is KVLCC2. The wave conditions are the regular head waves of λ/LPP = 0.6 and 1.0 with three wave steepness ratios at three ship speeds of 13.5, 14.5 and 15.5 knots (design speed). In the case of λ/LPP = 0.6 at design speed, two more wave steepness ratios have been taken into consideration. The indirect methods have been evaluated through comparing the speed-power-rpm relationships with those obtained from the resistance and self-propulsion tests in calm water and in waves. The load variation method has been applied to predict propulsive performances in waves, and to derive overload factors (ITTC, 2018). The overload factors have been applied to obtain propulsive efficiency and propeller revolution. The thrust and revolution method (ITTC, 2014) has been modified.


    Access

    Download


    Export, share and cite



    Title :

    Comparative study on the prediction of speed-power-rpm of the KVLCC2 in regular head waves using model tests


    Contributors:
    Jin-Won Yu (author) / Cheol-Min Lee (author) / Jin-Hyeok Seo (author) / Ho Hwan Chun (author) / Jung-Eun Choi (author) / Inwon Lee (author)


    Publication date :

    2021




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown





    TURNING CHARACTERISTICS OF KVLCC2 IN REGULAR HEAD AND BEAM WAVES

    Kim, D. J. / Yun, K. / Park, J. Y. et al. | TIBKAT | 2018


    A numerical investigation on the nominal wake of KVLCC2 model ship in regular head waves

    Hyun-Woo Shin / Kwang-Jun Paik / Yoon-Ho Jang et al. | DOAJ | 2020

    Free access