ObjectivesAiming at the replacement of propellers behind surface ships with pumpjet propulsion systems, this paper introduces a novel method for predicting full-scale power performance based on statistical learning. MethodsPump performance maps originating from the neural network learning of existing pumpjet thrust coefficient maps and matched to a ship's drag line from model tests are used to determine the pumpjet's full-scale power performance behind a large surface ship. To validate its precision and availability, traditional complete model tests including the ship model drag test, pump model open water test and ship-pumpjet self-propulsion test are completed to determine the full-scale benchmark power performance under different ship speeds.ResultsThe prediction errors of the pumpjet's rotation speed, thrust and power under different self-propulsion ship speeds from 18 knots to the design point of 30 knots are smaller than 5.4%, with no more than 2% from the design condition. As for the ship-propulsor interaction amplitude, the surface ship-pumpjet subsystem lies between ship-propeller interaction and ship-waterjet pump interaction with a thrust deduction coefficient approaching zero. From this point of view, the pumpjet propulsion system behind a surface ship can be recognized as a transitional stage from the propeller-shaft configuration to the waterjet propulsion system.ConclusionsThe method proposed herein can predict the full-scale power performance of a pumpjet propulsion system behind a ship while advancing pumpjet propulsion system design and applications for new large-scale surface warships.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    New method for predicting full-scale power performance of pumpjet propulsion system based on statistical learning


    Beteiligte:
    Qiongfang YANG (Autor:in) / Rui WU (Autor:in) / Minmin ZHENG (Autor:in) / Xuequan MA (Autor:in) / Heng LIU (Autor:in) / Yilin YANG (Autor:in)


    Erscheinungsdatum :

    2022




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt





    New Pumpjet Design Theory

    O. Furuya / W. L. Chiang | NTIS | 1988


    Reverse direction open-water test method for pumpjet Propulsor

    AHN JONG WOO / SEOL HAN SHIN / JEONG HONG SEOK et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    CFD prediction and simulation of a pumpjet propulsor

    Lin Lu / Guang Pan / Prasanta K. Sahoo | DOAJ | 2016

    Freier Zugriff

    Different Presentations of Propulsive Coefficient for Pumpjet Propulsors

    Bolotin, F. F. / Efremov, S. V. / Krylov Shipbuilding Research Institute | British Library Conference Proceedings | 2003