Eddy vorticity in cavitating tip vortices modelled by different turbulence models using the RANS approach

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

    2 Citations (Scopus)

    Abstract

    VTT Technical Research Centre of Finland and Aalto University have been investigating numerical simulation of cavitating propellers. Special emphasis is placed on the simulation of cavitating tip vortices. The simulations are performed with the $k-{\epsilon> SST $k-{\omega> and EARSM turbulence models in wetted and cavitating conditions. The calculations are performed in uniform inflow. The propeller performance characteristics and the wake velocities in the wetted conditions were compared to the measurements. Additionally, the simulated cavitation extent on the propeller was compared to the measurements. Good correlation between the tests and simulations were found. The turbulence models gave significant differences to the tip vortex core solutions in wetted and cavitating conditions. The $k-{\epsilon> model gave high non-dimensional Reynolds stresses both in wetted and cavitating conditions. The anisotropic EARSM model gave the lowest Reynolds stresses in the wetted conditions in the vortex core. In cavitating conditions the SST $k-{\omega> and EARSM models gave very low Reynolds stresses to the vaporous vortex core.
    Original languageEnglish
    Title of host publicationProceedings of the jointly organised 11th World Congress on Computational Mechanics WCCM XI, 5th European Conference on Computational Mechanics ECCM V, 6th European Conference on Computational Fluid Dynamics, ECFD VI
    Place of PublicationBarcelona, Spain
    Pages4741 - 4752
    Publication statusPublished - 2014
    MoE publication typeA4 Article in a conference publication
    Event11th World Congress on Computational Mechanics - 5th European Conference on Computational Mechanics - 6th European Conference on Computational Fluid Dynamics, WCCM XI - ECCM V - ECFD VI - Barcelona, Spain
    Duration: 20 Jul 201425 Jul 2014

    Conference

    Conference11th World Congress on Computational Mechanics - 5th European Conference on Computational Mechanics - 6th European Conference on Computational Fluid Dynamics, WCCM XI - ECCM V - ECFD VI
    Abbreviated titleWCCM XI - ECCM V - ECFD VI
    CountrySpain
    CityBarcelona
    Period20/07/1425/07/14

    Fingerprint

    Vorticity
    Turbulence models
    Vortex flow
    Propellers
    Cavitation
    Computer simulation

    Keywords

    • cavitation
    • propellers
    • tip vortex
    • turbulence models
    • ships

    Cite this

    Sipilä, T., Sánchez-Caja, A., & Siikonen, T. (2014). Eddy vorticity in cavitating tip vortices modelled by different turbulence models using the RANS approach. In Proceedings of the jointly organised 11th World Congress on Computational Mechanics WCCM XI, 5th European Conference on Computational Mechanics ECCM V, 6th European Conference on Computational Fluid Dynamics, ECFD VI (pp. 4741 - 4752). Barcelona, Spain.
    Sipilä, Tuomas ; Sánchez-Caja, Antonio ; Siikonen, T. / Eddy vorticity in cavitating tip vortices modelled by different turbulence models using the RANS approach. Proceedings of the jointly organised 11th World Congress on Computational Mechanics WCCM XI, 5th European Conference on Computational Mechanics ECCM V, 6th European Conference on Computational Fluid Dynamics, ECFD VI. Barcelona, Spain, 2014. pp. 4741 - 4752
    @inproceedings{949dda4f9a034a1d99cd1a208adb5d4a,
    title = "Eddy vorticity in cavitating tip vortices modelled by different turbulence models using the RANS approach",
    abstract = "VTT Technical Research Centre of Finland and Aalto University have been investigating numerical simulation of cavitating propellers. Special emphasis is placed on the simulation of cavitating tip vortices. The simulations are performed with the $k-{\epsilon> SST $k-{\omega> and EARSM turbulence models in wetted and cavitating conditions. The calculations are performed in uniform inflow. The propeller performance characteristics and the wake velocities in the wetted conditions were compared to the measurements. Additionally, the simulated cavitation extent on the propeller was compared to the measurements. Good correlation between the tests and simulations were found. The turbulence models gave significant differences to the tip vortex core solutions in wetted and cavitating conditions. The $k-{\epsilon> model gave high non-dimensional Reynolds stresses both in wetted and cavitating conditions. The anisotropic EARSM model gave the lowest Reynolds stresses in the wetted conditions in the vortex core. In cavitating conditions the SST $k-{\omega> and EARSM models gave very low Reynolds stresses to the vaporous vortex core.",
    keywords = "cavitation, propellers, tip vortex, turbulence models, ships",
    author = "Tuomas Sipil{\"a} and Antonio S{\'a}nchez-Caja and T. Siikonen",
    note = "Project code: 87250",
    year = "2014",
    language = "English",
    isbn = "978-84-942844-7-2",
    pages = "4741 -- 4752",
    booktitle = "Proceedings of the jointly organised 11th World Congress on Computational Mechanics WCCM XI, 5th European Conference on Computational Mechanics ECCM V, 6th European Conference on Computational Fluid Dynamics, ECFD VI",

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    Sipilä, T, Sánchez-Caja, A & Siikonen, T 2014, Eddy vorticity in cavitating tip vortices modelled by different turbulence models using the RANS approach. in Proceedings of the jointly organised 11th World Congress on Computational Mechanics WCCM XI, 5th European Conference on Computational Mechanics ECCM V, 6th European Conference on Computational Fluid Dynamics, ECFD VI. Barcelona, Spain, pp. 4741 - 4752, 11th World Congress on Computational Mechanics - 5th European Conference on Computational Mechanics - 6th European Conference on Computational Fluid Dynamics, WCCM XI - ECCM V - ECFD VI, Barcelona, Spain, 20/07/14.

    Eddy vorticity in cavitating tip vortices modelled by different turbulence models using the RANS approach. / Sipilä, Tuomas; Sánchez-Caja, Antonio; Siikonen, T.

    Proceedings of the jointly organised 11th World Congress on Computational Mechanics WCCM XI, 5th European Conference on Computational Mechanics ECCM V, 6th European Conference on Computational Fluid Dynamics, ECFD VI. Barcelona, Spain, 2014. p. 4741 - 4752.

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

    TY - GEN

    T1 - Eddy vorticity in cavitating tip vortices modelled by different turbulence models using the RANS approach

    AU - Sipilä, Tuomas

    AU - Sánchez-Caja, Antonio

    AU - Siikonen, T.

    N1 - Project code: 87250

    PY - 2014

    Y1 - 2014

    N2 - VTT Technical Research Centre of Finland and Aalto University have been investigating numerical simulation of cavitating propellers. Special emphasis is placed on the simulation of cavitating tip vortices. The simulations are performed with the $k-{\epsilon> SST $k-{\omega> and EARSM turbulence models in wetted and cavitating conditions. The calculations are performed in uniform inflow. The propeller performance characteristics and the wake velocities in the wetted conditions were compared to the measurements. Additionally, the simulated cavitation extent on the propeller was compared to the measurements. Good correlation between the tests and simulations were found. The turbulence models gave significant differences to the tip vortex core solutions in wetted and cavitating conditions. The $k-{\epsilon> model gave high non-dimensional Reynolds stresses both in wetted and cavitating conditions. The anisotropic EARSM model gave the lowest Reynolds stresses in the wetted conditions in the vortex core. In cavitating conditions the SST $k-{\omega> and EARSM models gave very low Reynolds stresses to the vaporous vortex core.

    AB - VTT Technical Research Centre of Finland and Aalto University have been investigating numerical simulation of cavitating propellers. Special emphasis is placed on the simulation of cavitating tip vortices. The simulations are performed with the $k-{\epsilon> SST $k-{\omega> and EARSM turbulence models in wetted and cavitating conditions. The calculations are performed in uniform inflow. The propeller performance characteristics and the wake velocities in the wetted conditions were compared to the measurements. Additionally, the simulated cavitation extent on the propeller was compared to the measurements. Good correlation between the tests and simulations were found. The turbulence models gave significant differences to the tip vortex core solutions in wetted and cavitating conditions. The $k-{\epsilon> model gave high non-dimensional Reynolds stresses both in wetted and cavitating conditions. The anisotropic EARSM model gave the lowest Reynolds stresses in the wetted conditions in the vortex core. In cavitating conditions the SST $k-{\omega> and EARSM models gave very low Reynolds stresses to the vaporous vortex core.

    KW - cavitation

    KW - propellers

    KW - tip vortex

    KW - turbulence models

    KW - ships

    M3 - Conference article in proceedings

    SN - 978-84-942844-7-2

    SP - 4741

    EP - 4752

    BT - Proceedings of the jointly organised 11th World Congress on Computational Mechanics WCCM XI, 5th European Conference on Computational Mechanics ECCM V, 6th European Conference on Computational Fluid Dynamics, ECFD VI

    CY - Barcelona, Spain

    ER -

    Sipilä T, Sánchez-Caja A, Siikonen T. Eddy vorticity in cavitating tip vortices modelled by different turbulence models using the RANS approach. In Proceedings of the jointly organised 11th World Congress on Computational Mechanics WCCM XI, 5th European Conference on Computational Mechanics ECCM V, 6th European Conference on Computational Fluid Dynamics, ECFD VI. Barcelona, Spain. 2014. p. 4741 - 4752