Journal of Ship and Ocean Technology

The Society of Naval Architects of Korea (대한조선학회)
권호 표지

A Numerical Study on the Source Mechanism of the Pressure Fluctuation Induced by Propeller Cavitation

  • Seol, Han-Shin (Maritime and Ocean Engineering Research Institute, KORDI) ;
  • Moon, Il-Sung (Maritime and Ocean Engineering Research Institute, KORDI)
  • Published : 2008.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper deals with the pressure fluctuation induced by propeller cavitation. The main objective of this study is to analyze the source mechanism of the pressure fluctuation induced by propeller cavitation. To analyze the source mechanism of the pressure fluctuation, modem acoustic theory is applied. The governing equation of the pressure fluctuation induced by propeller is derived using Ffowcs Williams-Hawkings proposed time domain acoustic method. The physical mechanism of pressure fluctuation at the blade rate frequency is analyzed using numerically generated cavitation volume variation. Finally the characteristics of the pressure fluctuation induced by a propeller are presented.

Keywords

References

  1. Bark, G. 1988. On the Mechanism of Propeller Cavitation Noise. Ph. D Thesis, Chalmers University of Technology
  2. Kim, M.-C., K.-S. Kim and I.-H. Song. 1996. A Study of a Correlation between Experiments and Calculations of Pressure Fluctuation on Hull Surface. Transactions of the Society of Naval Architectures of Korea, 33, 1, 19-26
  3. Kinns, R. and C. D. Bloor. 2003. Hull Vibration excitation due to monopole and dipole propeller sources. Journal of Sound and Vibration, 27, 951-980
  4. Lee, C.-S., J.-T. Lee, J.-C. Suh and Y.-G. Kim. 1992. An Analysis of Excitation Forces on the Ship Hull Induced by the Propeller. Transactions of the Society of Naval Architectures of Korea, 29, 1, 81-92
  5. The Specialist Committee on Cavitation Induced Pressures. 2002. 23rd International Towing Tank Conference, 417-458