FIRST AND SECOND-ORDER THEORY ON A SUPERCAVITATING HYDROFOIL WITH A JET FLAP

The basic relations for an infinite steady flow around thin hydrofoil with a jet flap are obtained as the solution of the Riemann-Hilbert-Poincare problem, and the first and second-order problem at small incidence and small deflection angle of the jet is analytically solved by means of the matched asymptotic expansions in the case of the jet-momentum coefficient small. Expressions for lift, drag, pitching-moment, and the cavity shape have been obtained as the asymptotic expansions in powers of the jet-momentum coefficient together with its logarithm. From the comparison of the lift with numerical results of Ho, the analytical method in this paper is seen to be very useful and reasonable.

• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Kida, T
  • Miyai, Y
• Publication Date: 1974

Media Info

• Features: References;
• Pagination: 6 p.

Subject/Index Terms

• TRT Terms: Hydrofoils; Supercavitating hydrofoils
• Old TRIS Terms: Flapped hydrofoils
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00072605
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: 74-APM-Q ASME Paper
• Files: TRIS
• Created Date: Dec 31 1974 12:00AM