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Experiments in Fluids

, Volume 41, Issue 3, pp 441–451 | Cite as

“Analysis of the propeller wake evolution by pressure and velocity phase measurements”

  • Mario FelliEmail author
  • Fabio Di Felice
  • Giulio Guj
  • Roberto Camussi
Research Article

Abstract

In the present study an experimental analysis of the velocity and pressure fields behind a marine propeller, in non-cavitating regime is reported. Particle image velocimetry measurements were performed in phase with the propeller angle, to investigate the evolution of the axial and the radial velocity components, from the blade trailing edge up to two diameters downstream. In phase pressure measurements were performed at four radial and eight longitudinal positions downstream the propeller model at different advance ratios. Pressure data, processed by using slotting techniques, allowed reconstructing the evolution of the pressure field in phase with the reference blade position. In addition, the correlation of the velocity and pressure signals was performed. The analysis demonstrated that, within the near wake, the tip vortices passage is the most important contribution in generating the pressure field in the propeller flow. The incoming vortex breakdown process causes a strong deformation of the hub vortex far downstream of the slipstream contraction. This process contributes to the pressure generation at the shaft rate frequency.

Keywords

Vortex Pressure Fluctuation Hydrophone Pressure Signal Laser Doppler Velocimetry 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors are grateful to the CEIMM personnel and Mr. Giordano who supported the PIV measurements.

References

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Mario Felli
    • 1
    Email author
  • Fabio Di Felice
    • 1
  • Giulio Guj
    • 2
  • Roberto Camussi
    • 2
  1. 1.INSEAN, Italian Ship Model BasinRomeItaly
  2. 2.Department of Mechanical and Industrial Engineering“Roma Tre” UniversityRomeItaly

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