An investigation into computational modelling of cavitation in a propeller's slipstream

Yilmaz, Naz and Khorasanchi, Mahdi and Atlar, Mehmet (2017) An investigation into computational modelling of cavitation in a propeller's slipstream. In: Fifth International Symposium on Marine Propulsion, 2017-06-12 - 2017-06-15.

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    Abstract

    This paper reports on the ongoing developments of cavitation modelling so far which include preliminary validation studies for simulating the performances of two benchmark model propellers: i.e. PPTC propeller with inclined shaft; and E779A propeller, in non-cavitating and cavitating conditions. The main purpose of this study is to estimate the propeller’s performance in cavitating conditions particularly developing tip vortex cavitation. The simulations in open water and cavitating conditions were carried out in uniform flow using a commercial CFD package. Firstly, the validation studies were conducted for non-cavitating condition. The comparison with the benchmark experimental data showed good agreement for the thrust and torque coefficients as well as for the open water efficiency. Next, the cavitation developed on the propeller was simulated using a numerical model based on the Rayleigh-Plesset equation. Propulsion coefficients (KT, KQ) and the cavity patterns on the benchmark propellers’ blades showed very good agreement with the experimental data. However, the tip vortices off the blades could only be traced for E779A propeller by using a new mesh refinement approach.

    Creators(s): Yilmaz, Naz ORCID logoORCID: https://orcid.org/0000-0002-0499-8248, Khorasanchi, Mahdi ORCID logoORCID: https://orcid.org/0000-0002-8626-3164 and Atlar, Mehmet;
    Item type:Conference or Workshop Item(Paper)
    ID code:62144
    Keywords:marine propellers, tip vortex cavitation, CFD, RANS, DES, Naval architecture. Shipbuilding. Marine engineering, Ocean Engineering
    Subjects:Naval Science > Naval architecture. Shipbuilding. Marine engineering
    Department:Faculty of Engineering > Naval Architecture, Ocean & Marine Engineering
    Strategic Research Themes > Ocean, Air and Space
    Depositing user: Pure Administrator
    Date deposited:25 Oct 2017 09:19
    Last modified:29 Oct 2020 08:32
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/62144
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