PROPELLER-INDUCED VELOCITY FIELD BY MEANS OF UNSTEADY LIFTING SURFACE THEORY

An analysis based on lifting surface theory has been developed for evaluation of the vibratory velocity field induced by an operating marine propeller in both uniform and nonuniform inflow fields. The analysis demonstrates how in the case of nonuniform flow the velocity at any field point is made up of a large number of combinations of the frequency constituents of the loading function with those of the space function. A numerical procedure has been developed adaptable to a high-speed digital computer and the existing program, which evaluates the steady and unsteady propeller loadings, the resulting hydrodynamic forces and moments and the pressure field, has been extended to include evaluation of the velocity field as well. The program could become a versatile and useful tool for the ship researcher or designer.

• Corporate Authors:

  Stevens Institute of Technology

  Davidson Laboratory, Castle Point Station
  Hoboken, NJ  United States  07030
• Authors:
  • JACOBS, W R
  • TSAKONAS, S
• Publication Date: 1972-2

Media Info

• Pagination: 51 p.

Subject/Index Terms

• TRT Terms: Aerodynamic lift; Hydrodynamics; Propellers
• Old TRIS Terms: Hydrodynamic configurations; Lifting surface theory; Propeller theory
• Subject Areas: Hydraulics and Hydrology; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00034742
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SIT-DL-72-1588 Final Rpt
• Contract Numbers: N00014-67-A-0202002
• Files: TRIS
• Created Date: Oct 27 1973 12:00AM