Abstract The current research proposed the theoretical model for ship twin-propeller jet based on the axial momentum theory and Gaussian normal distribution. The twin-propeller jet model is compared to the more matured single propeller jet model with good agreement. Computational Fluid Dynamics (CFD) method is used to acquire the velocity distribution within the twin-propeller jet for understanding of flow characteristics and validation purposes. Efflux velocity is the maximum velocity within the entire jet with strong influences by the geometrical profiles of the blades. Twin-propeller jet model showed four-peaked profile at the initial plane downstream to the propeller compared to the two-peaked profile from a single-propeller. The four-peaked profile merges to be twopeaked velocity profile and then one-peaked profile due to the fluid mixing. Entrainment occurs between the ambient still water outside and the rotating flow within jet due to the high velocity gradient. The research proposes a twin-propeller jet theory with a serial of equations enabling the predictions of velocity magnitude within the jet.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Ship Twin-propeller Jet Model used to Predict the Initial Velocity and Velocity Distribution within Diffusing Jet


    Beteiligte:
    Jiang, Jinxin (Autor:in) / Lam, Wei-Haur (Autor:in) / Cui, Yonggang (Autor:in) / Zhang, Tianming (Autor:in) / Sun, Chong (Autor:in) / Guo, Jianhua (Autor:in) / Ma, Yanbo (Autor:in) / Wang, Shuguang (Autor:in) / Hamill, Gerard (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2019-01-02


    Format / Umfang :

    14 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Ship Twin-propeller Jet Model used to Predict the Initial Velocity and Velocity Distribution within Diffusing Jet

    Jiang, Jinxin / Lam, Wei-Haur / Cui, Yonggang et al. | Online Contents | 2019



    PROPELLER SHAFT AND CONSTANT-VELOCITY JOINT USED IN SAID PROPELLER SHAFT

    SUGIYAMA KENICHI / MABE YASUTOMO / MASUDA TOSHIYUKI et al. | Europäisches Patentamt | 2016

    Freier Zugriff


    FRONT-MOUNTED TWIN-RUDDER PROPELLER SHIP

    MORIMOTO NOBUYOSHI | Europäisches Patentamt | 2018

    Freier Zugriff