Nominal vs. effective wake fields and their influence on propeller cavitation performance

Pelle Bo Regener*, Yasaman Mirsadraee, Poul Andersen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Propeller designers often need to base their design on the nominal model scale wake distribution because the effective full scale distribution is not available. The effects of such incomplete design data on cavitation performance are examined in this paper. The behind-ship cavitation performance of two propellers is evaluated, where the cases considered include propellers operating in the nominal model and full scale wake distributions and in the effective wake distribution, also in the model and full scale. The method for the analyses is a combination of RANS for the ship hull and a panel method for the propeller flow, with a coupling of the two for the interaction of ship and propeller flows. The effect on sheet cavitation due to the different wake distributions is examined for a typical full-form ship. Results show considerable differences in cavitation extent, volume, and hull pressure pulses.
Original languageEnglish
Article number34
JournalJournal of Marine Science and Engineering
Volume6
Issue number2
Number of pages14
ISSN2077-1312
DOIs
Publication statusPublished - 2018

Bibliographical note

Copyright: 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

Keywords

  • Civil and Structural Engineering
  • Ocean Engineering
  • Water Science and Technology
  • Effective wake
  • Propeller cavitation
  • RANS-BEM coupling
  • Wake scaling

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