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 ![]() ![]() | Item type: | Conference or Workshop Item(Paper) |
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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: | 24 Jan 2021 03:51 |
Related URLs: | |
URI: | https://strathprints.strath.ac.uk/id/eprint/62144 |
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