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Numerical analysis of cavitation about marine propellers using a compressible multiphase VOF fractional step method
Citation
Yu, H and Garaniya, V and Pennings, P and Vogt, J, Numerical analysis of cavitation about marine propellers using a compressible multiphase VOF fractional step method, Proceedings of the 9th Australasian Congress on Applied Mechanics (ACAM), 27-29 November 2017, Sydney, Australia, pp. 820-827. ISBN 9781925627022 (2017) [Refereed Conference Paper]
Copyright Statement
Copyright 2017 Engineers Australia
Official URL: https://search.informit.com.au/documentSummary;dn=...
Abstract
In this study, the morphology of cavitation about two marine propellers (four bladed and two bladed) is investigated numerically. A compressible, multiphase Volume of Fluid method integrated with an advanced energy equation is employed to reveal the flow physics around the propeller. Low numerical dissipation is achieved with the use of a Kurganov-Tadmor central flux scheme and a compressible fraction step method for the pressure velocity coupling. The mass transfer source terms in the continuity, momentum and energy equations are modelled with the Schnerr and Sauer cavitation model which is modified to ensure the boundedness of volume fraction in each computational unit. Following this, a Ffowcs Williams and Hawkings formulation 1A model is utilised to approximate the acoustic pressure fluctuation caused by the formation and collapse of vortex cavity at the blade tip of the two bladed propeller. Qualitative comparison of the simulations and experimental visualisations demonstrates the good ability of the developed code to model propeller cavitation. Further investigations are needed to fully validate the acoustic model.
Item Details
Item Type: | Refereed Conference Paper |
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Keywords: | cavitation, hydrodynamic noise, compressible flow, volume of fluid, central flux scheme, fraction step method |
Research Division: | Engineering |
Research Group: | Automotive engineering |
Research Field: | Automotive combustion and fuel engineering |
Objective Division: | Transport |
Objective Group: | Environmentally sustainable transport activities |
Objective Field: | Environmentally sustainable transport activities not elsewhere classified |
UTAS Author: | Yu, H (Mr Hongjiang Yu) |
UTAS Author: | Garaniya, V (Dr Vikram Garaniya) |
ID Code: | 123262 |
Year Published: | 2017 |
Deposited By: | NC Maritime Engineering and Hydrodynamics |
Deposited On: | 2018-01-02 |
Last Modified: | 2018-05-22 |
Downloads: | 0 |
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