Accession Number:

ADA347482

Title:

Cavitation and 3-D LDV Tip-Flowfield Measurements of Propeller 5168

Descriptive Note:

Research and development Mar 96-Sep 97

Corporate Author:

NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD HYDROMECHANICS DIRECTORATE

Report Date:

1998-05-01

Pagination or Media Count:

65.0

Abstract:

Detailed velocity measurements were made of the velocity field behind Propeller 5168 in the Carderock Division, Naval Surface Warfare Center CDNSWC 36 inch water tunnel. The measurements were made in order to examine the behavior of the tip vortex flow. A first set of measurements was made with a three component Laser Doppler Velocimeter LDV system at four different advance coefficients and at four downstream stations. A second set of measurements was made with a three component, coincident LDV system at a single advance coefficient and downstream station. The coincident set of measurements was of higher accuracy and included data on the Reynolds shear stress terms. Plots are presented of the detailed tip vortex structure, and the variation of this structure with advance coefficient and location is examined. Data on the thrust, torque, and cavitation performance of the propeller are also included.

Subject Categories:

  • Marine Engineering
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE