Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    In this paper, we conducted numerical simulations to investigate single and two-phase flows around marine propellers in open-water conditions at different Reynolds number regimes. Simulations were carried out using a homogeneous two-phase flow model with RANS turbulence modelling approaches. Transition was accounted for in the model-scale simulations by employing an LCTM transition model. In the model scale, also an anisotropic RANS model was utilized.
    We investigated two types of marine propellers: a conventional and a tip-loaded one. We compared the results of the simulations to experimental results in terms of global propeller performance and the cavitation observations. The propeller cavitation, near-blade flow phenomena and the propeller wake flow characteristics were investigated in model- and full-scale conditions. A grid sensitivity study was carried out with respect to the propeller performance and cavitation characteristics.
    The model-scale propeller performance and the cavitation patterns were captured well with the numerical simulations, with little difference between the utilized turbulence models. The global propeller performance and the cavitation patterns were similar between the model- and full-scale simulations. A tendency of increased cavitation extent was observed as the Reynolds number increases. At the same time, greater dissipation of the cavitating tip vortex was noted in the full scale conditions.
    Original languageEnglish
    Title of host publicationProceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy
    Place of PublicationRome, Italy
    PublisherNational Research Council of Italy, Institute of Marine Engineering (CNR-INM)
    Number of pages15
    ISBN (Electronic)978-88-7617-049-2
    ISBN (Print)978-88-7617-047-8, 978-88-7617-048-5
    Publication statusPublished - 31 May 2019
    MoE publication typeA4 Article in a conference publication
    Event6th International Symposium on Marine Propulsors, SMP'19 - Rome, Italy
    Duration: 26 May 201931 May 2019

    Publication series

    SeriesInternational Symposiums on Marine Propulsors

    Conference

    Conference6th International Symposium on Marine Propulsors, SMP'19
    CountryItaly
    CityRome
    Period26/05/1931/05/19

    Fingerprint

    propellers
    viscous flow
    Reynolds number
    cavitation flow
    scale models
    simulation
    two phase flow
    single-phase flow
    flow characteristics
    turbulence models
    blades
    wakes
    tendencies
    dissipation
    turbulence
    grids
    vortices
    sensitivity

    Keywords

    • Cavitation
    • CFD
    • Turbulence modelling
    • Scale effects

    Cite this

    Viitanen, V., Siikonen, T., & Sanchez Caja, A. (2019). Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers. In Proceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy [WA2.1] Rome, Italy: National Research Council of Italy, Institute of Marine Engineering (CNR-INM). International Symposiums on Marine Propulsors
    Viitanen, Ville ; Siikonen, Timo ; Sanchez Caja, Antonio. / Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers. Proceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy. Rome, Italy : National Research Council of Italy, Institute of Marine Engineering (CNR-INM), 2019. (International Symposiums on Marine Propulsors).
    @inproceedings{c8a9ca88c5084797baa78fe7a5076199,
    title = "Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers",
    abstract = "In this paper, we conducted numerical simulations to investigate single and two-phase flows around marine propellers in open-water conditions at different Reynolds number regimes. Simulations were carried out using a homogeneous two-phase flow model with RANS turbulence modelling approaches. Transition was accounted for in the model-scale simulations by employing an LCTM transition model. In the model scale, also an anisotropic RANS model was utilized.We investigated two types of marine propellers: a conventional and a tip-loaded one. We compared the results of the simulations to experimental results in terms of global propeller performance and the cavitation observations. The propeller cavitation, near-blade flow phenomena and the propeller wake flow characteristics were investigated in model- and full-scale conditions. A grid sensitivity study was carried out with respect to the propeller performance and cavitation characteristics.The model-scale propeller performance and the cavitation patterns were captured well with the numerical simulations, with little difference between the utilized turbulence models. The global propeller performance and the cavitation patterns were similar between the model- and full-scale simulations. A tendency of increased cavitation extent was observed as the Reynolds number increases. At the same time, greater dissipation of the cavitating tip vortex was noted in the full scale conditions.",
    keywords = "Cavitation, CFD, Turbulence modelling, Scale effects",
    author = "Ville Viitanen and Timo Siikonen and {Sanchez Caja}, Antonio",
    year = "2019",
    month = "5",
    day = "31",
    language = "English",
    isbn = "978-88-7617-047-8",
    series = "International Symposiums on Marine Propulsors",
    publisher = "National Research Council of Italy, Institute of Marine Engineering (CNR-INM)",
    booktitle = "Proceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy",
    address = "Italy",

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    Viitanen, V, Siikonen, T & Sanchez Caja, A 2019, Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers. in Proceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy., WA2.1, National Research Council of Italy, Institute of Marine Engineering (CNR-INM), Rome, Italy, International Symposiums on Marine Propulsors, 6th International Symposium on Marine Propulsors, SMP'19, Rome, Italy, 26/05/19.

    Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers. / Viitanen, Ville; Siikonen, Timo; Sanchez Caja, Antonio.

    Proceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy. Rome, Italy : National Research Council of Italy, Institute of Marine Engineering (CNR-INM), 2019. WA2.1 (International Symposiums on Marine Propulsors).

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    TY - GEN

    T1 - Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers

    AU - Viitanen, Ville

    AU - Siikonen, Timo

    AU - Sanchez Caja, Antonio

    PY - 2019/5/31

    Y1 - 2019/5/31

    N2 - In this paper, we conducted numerical simulations to investigate single and two-phase flows around marine propellers in open-water conditions at different Reynolds number regimes. Simulations were carried out using a homogeneous two-phase flow model with RANS turbulence modelling approaches. Transition was accounted for in the model-scale simulations by employing an LCTM transition model. In the model scale, also an anisotropic RANS model was utilized.We investigated two types of marine propellers: a conventional and a tip-loaded one. We compared the results of the simulations to experimental results in terms of global propeller performance and the cavitation observations. The propeller cavitation, near-blade flow phenomena and the propeller wake flow characteristics were investigated in model- and full-scale conditions. A grid sensitivity study was carried out with respect to the propeller performance and cavitation characteristics.The model-scale propeller performance and the cavitation patterns were captured well with the numerical simulations, with little difference between the utilized turbulence models. The global propeller performance and the cavitation patterns were similar between the model- and full-scale simulations. A tendency of increased cavitation extent was observed as the Reynolds number increases. At the same time, greater dissipation of the cavitating tip vortex was noted in the full scale conditions.

    AB - In this paper, we conducted numerical simulations to investigate single and two-phase flows around marine propellers in open-water conditions at different Reynolds number regimes. Simulations were carried out using a homogeneous two-phase flow model with RANS turbulence modelling approaches. Transition was accounted for in the model-scale simulations by employing an LCTM transition model. In the model scale, also an anisotropic RANS model was utilized.We investigated two types of marine propellers: a conventional and a tip-loaded one. We compared the results of the simulations to experimental results in terms of global propeller performance and the cavitation observations. The propeller cavitation, near-blade flow phenomena and the propeller wake flow characteristics were investigated in model- and full-scale conditions. A grid sensitivity study was carried out with respect to the propeller performance and cavitation characteristics.The model-scale propeller performance and the cavitation patterns were captured well with the numerical simulations, with little difference between the utilized turbulence models. The global propeller performance and the cavitation patterns were similar between the model- and full-scale simulations. A tendency of increased cavitation extent was observed as the Reynolds number increases. At the same time, greater dissipation of the cavitating tip vortex was noted in the full scale conditions.

    KW - Cavitation

    KW - CFD

    KW - Turbulence modelling

    KW - Scale effects

    M3 - Conference article in proceedings

    SN - 978-88-7617-047-8

    SN - 978-88-7617-048-5

    T3 - International Symposiums on Marine Propulsors

    BT - Proceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy

    PB - National Research Council of Italy, Institute of Marine Engineering (CNR-INM)

    CY - Rome, Italy

    ER -

    Viitanen V, Siikonen T, Sanchez Caja A. Numerical Viscous Flow Simulations of Cavitating Propeller Flows at Different Reynolds Numbers. In Proceedings of the Sixth International Symposium on Marine Propulsors - smp'19 26 - 30 May 2019, Rome, Italy. Rome, Italy: National Research Council of Italy, Institute of Marine Engineering (CNR-INM). 2019. WA2.1. (International Symposiums on Marine Propulsors).