SCALE EFFECT EXPERIMENTS WITH DUCTED PROPELLERS

Experiments carried out at the Swedish State Shipbuilding Experimental Tank (SSPA)indicate that some difficulties encountered are due to flow separation occurring on the duct in the self propulsion tests. These experiments, including the following are described in the present paper: self-propulsion tests with a systematic series of ducted propellers; self-propulsion tests with turbulence stimulators on the duct; and thrust and torque measurements in open water and in the behind condition at varying Reynolds numbers in the SSPA cavitation tunnel No. 2. The conditions of flow separation on the duct are discussed and a short description of a fundamental investigation in progress at SSPA is given. Order from BSRA as No. 53,371.

• Supplemental Notes:
  • Paper presented at PRADS-International Symposium on Practical Design in Shipbuilding, Tokyo, 18-20 October 1977.
• Corporate Authors:

  Intl Symposium on Practical Design in Shipbuilding

  Tokyo,   Japan 
• Authors:
  • Dyne, G
• Conference:
  • Paper presented at PRADS-International Symposium on Practical Design in Shipbuilding, Tokyo, 18-20 October 1977.
• Publication Date: 1977

Media Info

• Features: References;
• Pagination: p. 329

Subject/Index Terms

• TRT Terms: Ducted propellers; Equipment tests; Propellers; Reynolds number; Tanks (Containers); Tests; Thrust
• Uncontrolled Terms: Scale effect
• Old TRIS Terms: Propeller thrust; Self propulsion; Tank testing
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00316723
• Record Type: Publication
• Source Agency: British Ship Research Association
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: Oct 8 1980 12:00AM