THREE-DIMENSIONAL THEORY ON SUPERCAVITATING HYDROFOILS NEAR A FREE SURFACE

Supercavitating hydrofoils of large aspect ratio operating near a free surface are investigated, assuming an inviscid and irrotational flow with the effects of gravity and surface tension neglected. The flow near the foil, treated as two-dimensional, is solved by a nonlinear free-streamline theory, then a three-dimensional "downwash" correction is made using Prandtl's lifting-line theory. The strength of the lifting-line vortex is determined by information from the two-dimensional solution through a matching procedure, in which the inverse of aspect ratio is used as a small parameter for asymptotic expansions. The analysis incorporates a free-surface reference level to determine the submergence depth of the foil.

  • Corporate Authors:

    Cambridge University Press

    200 Euston Road
    London NW1,   England 
  • Authors:
    • Furuya, O
  • Publication Date: 1975-9-23

Media Info

  • Features: References;
  • Pagination: p. 339-359
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00130872
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Apr 7 1976 12:00AM