Ship twin-propeller jet model used to predict the initial velocity and velocity distribution within diffusing jet

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    Ship twin-propeller jet model used to predict the initial velocity and velocity distribution within diffusing jet. / Jang, Jinxin ; Lam, Wei-Haur; Cui, Yonggang; Zhang, Tainming ; Sun, Chong; Guo, Jianhua; Ma, Yanbo; Wang, Shuguang; Hamill, Gerard.

    In: KSCE Journal of Civil Engineering, Vol. 23, No. 3, 02.03.2019.

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    Jang, Jinxin ; Lam, Wei-Haur ; Cui, Yonggang ; Zhang, Tainming ; Sun, Chong ; Guo, Jianhua ; Ma, Yanbo ; Wang, Shuguang ; Hamill, Gerard. / Ship twin-propeller jet model used to predict the initial velocity and velocity distribution within diffusing jet. In: KSCE Journal of Civil Engineering. 2019 ; Vol. 23, No. 3.

    Bibtex

    @article{f21333c0c36d4d888966748528b2dcf4,
    title = "Ship twin-propeller jet model used to predict the initial velocity and velocity distribution within diffusing jet",
    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 two-peaked 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.",
    author = "Jinxin Jang and Wei-Haur Lam and Yonggang Cui and Tainming Zhang and Chong Sun and Jianhua Guo and Yanbo Ma and Shuguang Wang and Gerard Hamill",
    year = "2019",
    month = "3",
    day = "2",
    doi = "10.1007/s12205-019-1370-x",
    language = "English",
    volume = "23",
    journal = "KSCE Journal of Civil Engineering",
    issn = "1226-7988",
    publisher = "Korean Society of Civil Engineers",
    number = "3",

    }

    RIS

    TY - JOUR

    T1 - Ship twin-propeller jet model used to predict the initial velocity and velocity distribution within diffusing jet

    AU - Jang, Jinxin

    AU - Lam, Wei-Haur

    AU - Cui, Yonggang

    AU - Zhang, Tainming

    AU - Sun, Chong

    AU - Guo, Jianhua

    AU - Ma, Yanbo

    AU - Wang, Shuguang

    AU - Hamill, Gerard

    PY - 2019/3/2

    Y1 - 2019/3/2

    N2 - 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 two-peaked 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.

    AB - 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 two-peaked 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.

    U2 - 10.1007/s12205-019-1370-x

    DO - 10.1007/s12205-019-1370-x

    M3 - Article

    VL - 23

    JO - KSCE Journal of Civil Engineering

    T2 - KSCE Journal of Civil Engineering

    JF - KSCE Journal of Civil Engineering

    SN - 1226-7988

    IS - 3

    ER -

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