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Numerical Investigation of Propeller Noise From Tip Vortex Cavitation

[+] Author Affiliations
Wencai Zhu, Hongtao Gao, Yuchao Song

Dalian Maritime University, Dalian, China

Paper No. OMAE2017-62629, pp. V07BT06A046; 6 pages
doi:10.1115/OMAE2017-62629
From:
  • ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 7B: Ocean Engineering
  • Trondheim, Norway, June 25–30, 2017
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5774-8
  • Copyright © 2017 by ASME

abstract

In this paper, the Mixture multiphase flow model and the Schnerr-Sauer cavitation model are used to simulate the tip vortex cavitation of the propeller and then to predict the sound pressure level of the propeller. The structured and unstructured grids are adopted in stationary domain and rotating domain, respectively. The moving reference frame model is used in the rotating domain. The open water characteristics of the propeller are calculated by the SST k-ω turbulence model and the isosurface of vorticity magnitude is clearly presented. The results of the calculation are compared with the non-cavitating condition. It shows that the efficiency of the propeller is reduced when the tip vortex cavitation appears. The tip vortex cavitation will lead to increases both in the overall sound pressure in time histories and in the sound pressure level in the frequency domain.

Copyright © 2017 by ASME

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