An Experimental Study of the Wake Behind a Ten-Bladed Propeller With and Without Ingested Turbulence

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Abstract

The focus of the present research was the evolution of the wake downstream of a ten bladed propeller. Previous experimental efforts have examined the wake at a single downstream location with upstream turbulence. The present experiments focused on the development of the wake by traversing an X-wire probe across the radius of the propeller at six axial locations. The data were acquired at two advance ratios, and two inflow turbulence levels. The blade position was monitored so that relevant statistics could be calculated in the rotating reference frame. Plots of the mean and RMS velocities for each of the three directional components at all downstream locations have been created for comparison with computational results. Two different methods were used to separate the blade wakes from turbulent fluctuations. A wake half width was calculated from the mean streamwise velocity component and the Karhunen-Lo$grave{e}$ve decomposition was used to separate blade wakes and turbulent velocity fluctuations with promising results. The current investigation will provide data and confirmation of experimental techniques and theoretical predictions to be implemented on full size surface ships and submarines.

Attributes

Attribute NameValues
URN
  • etd-09222003-143132

Author Richard Paul Noffke
Advisor Dr. Thomas J. Mueller
Contributor Dr. Thomas J. Mueller, Committee Chair
Contributor Dr. Scott C. Morris, Committee Member
Contributor Dr. Hafiz M. Atassi, Committee Member
Degree Level 1
Degree Discipline Aerospace and Mechanical Engineering
Degree Name
Defense Date
  • 2003-09-02

Submission Date 2003-09-22
Country
  • United States of America

Subject
  • propeller

  • ingested turbulence

  • experimental

  • wake

Publisher
  • University of Notre Dame

Language
  • English

Access Rights Open Access
Content License
  • All rights reserved

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