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Journal of Hydrodynamics

, Volume 18, Issue 1, pp 372–376 | Cite as

Effects of reynolds stress on flow noise from vortex/hydrofoil interactions

  • Z. C. Zheng
  • Y. Xu
Session B6
  • 2 Downloads

Abstract

Acoustic field generated by a single vortex approaching a hydrofoil is studied. A combined vortex/RANS simulation for the near-field unsteady vorticity is developed to include effects from RANS Reynolds stresses. The far-field acoustics is calculated using a vortex sound formula with the near-field vorticity as the source. The results show that at a higher incident angle when the RANS shows a substantial region with strong Reynolds stresses, there is a significant increase in the sound level due to enhanced unsteady vorticity in the shed vortices near the trailing edge.

Key words

hydroacoustics vortex method hydrofoil vortex sound 

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Copyright information

© China Ship Scientific Research Center 2006

Authors and Affiliations

  • Z. C. Zheng
    • 1
  • Y. Xu
    • 1
  1. 1.Department of Mechanical and Nuclear EngineeringKansas State UniversityManhattanUSA

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