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On Influence of Turbulence Modelling on Cavitation Prediction for Flow Around P1356 Ship Propeller

[+] Author Affiliations
Conxita Lifante, Thomas Frank

ANSYS Germany GmbH, Otterfing, Germany

Karsten Rieck

Schiffsbau-Versuchsanstalt Potsdam GmbH, Potsdam, Germany

Paper No. OMAE2008-57073, pp. 63-72; 10 pages
doi:10.1115/OMAE2008-57073
From:
  • ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering
  • Volume 4: Ocean Engineering; Offshore Renewable Energy
  • Estoril, Portugal, June 15–20, 2008
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4821-0 | eISBN: 0-7918-3821-8
  • Copyright © 2008 by ASME

abstract

The goal of this work is to get a deeper understanding of the structure of the flow around a propeller of a passenger ship, specially the pressure field, where turbulent fluctuations and cavitation can lead to pressure oscillations, vibration and noise. The accurate prediction of cavitation has been found out to be intrinsically related to the accurate resolution of turbulent structures of the flow. Therefore, a thoroughly analysis of the turbulence modeling in this kind of application was performed. Following the Best Practice Guidelines (BPG) [1] different grids and turbulence models have been investigated. The numerical results obtained have been compared to the experimental data generated at SVA Potsdam, which includes transient pressure signals as well as cavitation patterns. A highly satisfactory agreement between numerical solutions and experiments is observed for the finest grids and a scale-resolving turbulence modeling approach (DES/SAS).

Copyright © 2008 by ASME

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