SEPARATION AND VENTILATION INTERACTION STUDIES

The problem of ventilation and separation associated with high speed struts piercing a free-water surface is discussed. An experimental program is described in which strut shapes would be selected whose separation characteristics matched those possible at full scale, and detailed studies of the model scale separation patterns would then be correlated with the ventilation inception angles achieved under similar flow conditions. The choice of foil shapes, determination of separation characteristics, and ventilation inception angles are all discussed, and areas on the foil where ventilation begins are also given. Observations on nose-initiated and tail-induced ventilation are given, and the authors conclude that the exact timing and mode of air entry through the surface to the separated regions is not determined by the separation pattern alone.

• Corporate Authors:

  Kalerghi Publications

  51 Welbeck Street
  London W1,   England 
• Authors:
  • Swales, P D
  • WRIGHT, A J
  • McGregor, R C
  • Cole, B N
• Publication Date: 1973-12

Media Info

• Features: References;
• Pagination: p. 8-12
• Serial:
  • Hovering Craft and Hydrofoil
  • Volume: 13
  • Issue Number: 3
  • Publisher: Kalerghi Publications

Subject/Index Terms

• TRT Terms: Boundary layer separation; Hydrofoils; Struts; Ventilation systems
• Uncontrolled Terms: Separation
• Old TRIS Terms: Surface piercing hydrofoils; Ventilated hydrofoils
• Subject Areas: Design; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00054167
• Record Type: Publication
• Source Agency: National Maritime Research Center, Kings Point
• Files: TRIS
• Created Date: May 7 1974 12:00AM