Experiments in Fluids

, Volume 11, Issue 1, pp 33–44 | Cite as

Measurements in the flow around a marine propeller at the stern of an axisymmetric body

Part 1: Circumferentially-averaged flow
  • B. -S. Hyun
  • V. C. Patel
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Abstract

An experimental study of the flow around and behind an axisymmetric body driven by a marine propeller is reported. Experiments were performed in a wind tunnel to document this complex, unsteady, three-dimensional, turbulent shear flow. Measurements were made in the boundary layer and wake of the bare body with a fixed dummy hub for the propeller, with the dummy hub rotating, and finally, with the propeller in operation. A five-hole yaw probe was employed for the mean-flow measurements, and two- and threesensor hotwires were used to obtained the mean and turbulent velocity fields. Part 1 of this two-part paper describes the experimental arrangement and circumferentially-averaged results which clarify certain overall aspects of the flow when it is viewed as a rotationally-symmetric flow. These are of special interest in marine hydrodynamics. In Part 2, the triple-sensor hotwire data are analyzed using phase-averaging techniques to reconstruct the instantaneous velocity and Reynolds-stress fields downstream of the propeller to show the evolution of the wakes of individual blades, blade-tip vortices, and the complex flow associated with vortices generated at hub-blade junctions.

Keywords

Vortex Boundary Layer Wind Tunnel Instantaneous Velocity Turbulent Velocity 
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.
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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • B. -S. Hyun
    • 1
  • V. C. Patel
    • 1
  1. 1.Iowa Institute of Hydraulic ResearchThe University of IowaIowa CityUSA

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