Abstract In this study, an experimental investigation has been made of the applicability of outer-layer vertical blades to real ship model. After first devised by Hutchins and Choi (2003), the outer-layer vertical blades demonstrated its effectiveness in reducing total drag of flat plate (Park et al., 2011) with maximum drag reduction of 9.6%. With a view to assessing the effect in the flow around a ship, the arrays of outer-layer vertical blades have been installed onto the side bottom and flat bottom of a 300k KVLCC model. A series of towing tank test has been carried out to investigate resistance ($ C_{TM} $) reduction efficiency and improvement of stern wake distribution with varying geometric parameters of the blades array. The installation of vertical blades led to the $ C_{TM} $ reduction of 2.15~2.76% near the service speed. The nominal wake fraction was affected marginally by the blades array and the axial velocity distribution tended to be more uniform by the blades array.


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    Titel :

    An experimental assessment of resistance reduction and wake modification of a kvlcc model by using outer-layer vertical blades


    Beteiligte:
    An, Nam Hyun (Autor:in) / Ryu, Sang Hoon (Autor:in) / Chun, Ho Hwan (Autor:in) / Lee, Inwon (Autor:in)


    Erscheinungsdatum :

    2014




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Klassifikation :

    BKL:    55.40 Schiffstechnik, Schiffbau / 50.92 Meerestechnik, Meerestechnik / 55.40 Schiffstechnik, Schiffbau, Schiffstechnik, Schiffbau / 50.92 Meerestechnik





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