LINEAR THEORY ON WATER ENTRY AND EXIT PROBLEMS OF A VENTILATING THIN WEDGE

A simplified mathematical model is formed for the flow field caused by the ventilating blade of a partially submerged propeller. The model is formed to investigate the difference between the phases of entry and exit; that is, a two-dimensional flat-sided wedge and a two-dimensional cambered wedge entering a free surface and exiting at another free surface, located at a distance equivalent to the length of circular path of blade section in the water. Pressure and drag are calculated for a flat plate and a parabolic cambered wedge, each at the instantaneous position, by a conformal mapping technique. A great difference in pressure distributions between the phases of entry and exit is obtained.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00224502
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • Yim, B
• Publication Date: 1974-3

Media Info

• Features: References;
• Pagination: p. 1-11
• Serial:
  • Journal of Ship Research
  • Volume: 18
  • Issue Number: 1
  • Publisher: Society of Naval Architects and Marine Engineers
  • ISSN: 0022-4502
  • EISSN: 1542-0604
  • Serial URL: https://onepetro.org/jsr

Subject/Index Terms

• TRT Terms: Free surface; Propeller blades; Propellers
• Uncontrolled Terms: Conformal mapping
• Old TRIS Terms: Free surface effects; Partially submerged propellers; Ventilated flow
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00053703
• Record Type: Publication
• Source Agency: Society of Naval Architects and Marine Engineers
• Contract Numbers: NR 062-426
• Files: TRIS
• Created Date: Apr 26 1974 12:00AM