THE FORCE ON A SLENDER FISH-LIKE BODY

The force acting on a fish-like body with combined thickness and lifting effects is analyzed on the assumption of inviscid flow. A general expression is developed for the pressure force on the body, which is analogous to the momentum-flux analysis for non-lifting bodies in classical hydrodynamics. For bodies with constant volume, the mean drag (or propulsive) force is expressed in terms of a contour integral around the vortex sheet behind the body. Attention is focused on the case of steady-state motion with constant angle of attack, and the induced drag is analyzed for finned axisymmetric bodies using a slender-body approximation. (Modified author abstract)

  • Supplemental Notes:
    • Originally published in Journal of Fluid Mechanics, Vol. 58 Part 4, pp 689-702, 1973.
  • Corporate Authors:

    Massachusetts Institute of Technology

    Department of Ocean Engineering, 77 Massachusetts Avenue
    Cambridge, MA  USA  02139
  • Authors:
    • Newman, J N
  • Publication Date: 1972-11-20

Media Info

  • Pagination: 15 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00051132
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Files: TRIS
  • Created Date: Feb 28 1974 12:00AM