Cavitating Propeller Flows Predicted by RANS Solver with Structured Grid and Small Reynolds Number Turbulence Model Approach

Tuomas Sipilä, Timo Siikonen, Ilkka Saisto, Jussi Martio, Heru Reksoprodjo

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

    Abstract

    Within the EU research project VIRTUE and Finnish Funding Agency for Technology and Innovation (TEKES) project VIRKOOT, a propeller is investigated in uniform and nonuniform inflow conditions by means of a RANS equation solver, FINFLO. The analyses are made in wetted and cavitating conditions. The simulations are conducted on a model scale and the results are compared with the measurements and cavitation tests performed by INSEAN. The predicted propeller open water thrust and torque are found to be within 5 % of the measured ones. The pressure peak at the leading edge of a blade is found to be sensitive to the grid resolution. The predicted cavitation behavior of the propeller blades is in reasonable accordance with the cavitation test observations. In uniform inflow the vaporized region is overpredicted. Contrastingly, the vaporized region is underpredicted in the nonuniform inflow calculations. The cavitation behavior trends seemed to be similar in the simulations and observations in nonuniform inflow. The loading histories of the wetted and cavitating propeller over one propeller revolution are almost the same due to the relative small cavitating region in the investigated conditions. The pressure distributions at several blade positions on the suction side of the propeller are shown in wetted and cavitating conditions for comparison.
    Original languageEnglish
    Title of host publicationProceedings of 7th International Symposium on Cavitation
    Place of PublicationAnn Arbor, USA
    PublisherUniversity of Michigan
    Pages1-11
    Publication statusPublished - 2009
    MoE publication typeA4 Article in a conference publication
    Event7th International Symposium on Cavitation, CAV2009 - Ann Arbor, United States
    Duration: 16 Aug 200920 Aug 2009

    Conference

    Conference7th International Symposium on Cavitation, CAV2009
    CountryUnited States
    CityAnn Arbor
    Period16/08/0920/08/09

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  • Cite this

    Sipilä, T., Siikonen, T., Saisto, I., Martio, J., & Reksoprodjo, H. (2009). Cavitating Propeller Flows Predicted by RANS Solver with Structured Grid and Small Reynolds Number Turbulence Model Approach. In Proceedings of 7th International Symposium on Cavitation (pp. 1-11). University of Michigan.