PROPELLER/STERN/BOUNDARY-LAYER INTERACTION ON AXISYMMETRIC BODIES: THEORY AND EXPERIMENT

Measurements of the boundary-layer characteristics and pressure distribution on three axisymmetric bodies with and without a propeller in operation are correlated with analytical techniques for computing (1) the interaction between the hull boundary layer flow and the potential flow and (2) the interaction between the operating propeller and the thick stern boundary layer. The agreement between the measured and computed shear stresses, pressure distributions, and velocity profiles was satisfactory except over the last 5 percent of body length on the two fullest afterbodies. An inviscid propeller-stern-boundary-layer interaaction model was developed and found to give accurate predictions of effective velocity profiles. The experimental results show that the potential-flow propeller-hull interaction methods give accurate predictions for thrust deduction and the propeller-induced pressure distribution. The present analytical techniques will be useful for predicting the full-scale effective velocity profile for propeller design when account is taken of the effects of Reynolds number, roughness, and propeller suction in modifying the nominal velocity profiles. (Author)

• Corporate Authors:

  David Taylor Naval Ship R&D Center

  Bethesda, MD  United States  20084
• Authors:
  • Huang, T T
  • Wang, H T
  • Santelli, N
  • Groves, N C
• Publication Date: 1976-12

Media Info

• Pagination: 84 p.

Subject/Index Terms

• TRT Terms: Artificial satellites; Boundary layer; Boundary layer flow; Drag; Flow fields; Hulls; Potential flow; Pressure; Propellers; Reynolds number; Roughness; Shear stress; Sterns; Thrust; Turbulence; Turbulent boundary layer; Vehicle design; Velocity; Wakes
• Uncontrolled Terms: Interaction; Navier Stokes equations; Pressure distribution; Profiles; Ship hulls
• Old TRIS Terms: Afterbodies; Axisymmetric; Marine propellers; Propeller design; Shear stresses; Ship sterns; Thrust deduction
• Subject Areas: Design; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00158528
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: DTNSRDC-76-0113 R&D Rpt.
• Files: TRIS
• Created Date: Aug 31 1977 12:00AM