A METHOD FOR ANALYZING THE PROPELLER-INDUCED VIBRATORY FORCES ACTING ON THE SURFACE OF A SHIP STERN

A method for analyzing the propeller-induced vibratory forces acting on the surface of a ship stern is presented. The conventional procedure for analyzing hull surface forces is to integrate the propeller-related unsteady pressure over the hull surface. Following a theoretical approach, the conventional procedure entails estimating the pressure due to diffraction of the propeller-induced water flow by the ship hull. This is very difficult to do realistically. This paper shows how hull surface forces can be analyzed without the need for specific knowledge of the diffraction pressure. The pressure integration is avoided by utilizing a special application of Green's Theorem. The computation effort needed in order to attain a higher level of realism can be substantially reduced as a result. Comparisons are made with earlier calcuations performed on a model of the DE 1040.

• Supplemental Notes:
  • Presented at the SNAME Annual Meeting, New York, N.Y., Nov. 14-16, 1974.
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • Vorus, W S
• Publication Date: 1974-11

Media Info

• Features: References;
• Pagination: 13 p.
• Serial:
  • Issue Number: 4

Subject/Index Terms

• TRT Terms: Atmospheric pressure; Hulls; Propellers; Vibration
• Old TRIS Terms: Hull vibration; Pressure fluctuations; Propeller induced vibration
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00071644
• Record Type: Publication
• Source Agency: Society of Naval Architects and Marine Engineers
• Files: TRIS
• Created Date: Nov 12 1974 12:00AM