A GENERALIZED SLENDER-BODY THEORY FOR FISH-LIKE FORMS

A consistent slender-body approximation is developed for the flow past a fish-like body with arbitrary combinations of body thickness and low-aspect-ratio fin appendages, but with the fins confined to the plane of symmetry of the body. Attention is focused on the interaction of the fin lifting surfaces with the body thickness, and especially on the dynamics of the vortex sheets shed from the fin trailing edges. Explicit results are given for axisymmetric bodies having fins with abrupt trailing edges, and calculations of the total lift force are presented for bodies with symmetric and asymmetric fin configurations, moving with a constant angle of attack. (Modified author abstract)

• Supplemental Notes:
  • Prepared in cooperation with California Inst. of Tech., Pasadena. Div. of Engineering and Applied Applied Science, Contract N00014-67-A-0094-0012, Grant NSF-GK-10216. Availability: Pub. in Jnl. of Fluid Mechanics, v57 pt-4 p673-693 1973.
• Corporate Authors:

  Massachusetts Institute of Technology

  Department of Ocean Engineering, 77 Massachusetts Avenue
  Cambridge, MA  United States  02139
• Authors:
  • Newman, J N
  • Wu, TYT
• Publication Date: 1972-9-18

Media Info

• Pagination: 21 p.

Subject/Index Terms

• TRT Terms: Aerodynamic lift; Aerodynamics; Fins (Aircraft); Fluid dynamics; Hydrodynamics; Ratios; Stabilizers; Thickness; Thinness; Trailing edges; Vortex shedding; Vortices
• Uncontrolled Terms: Aspect ratio; Interaction
• Old TRIS Terms: Aerodynamic characteristics; Fin stabilizers; Fins; Hydrodynamic configurations; Slender bodies; Tip vortices; Vortex sheets
• Subject Areas: Design; Hydraulics and Hydrology; Marine Transportation;

Filing Info

• Accession Number: 00048324
• Record Type: Publication
• Source Agency: National Technical Information Service
• Files: TRIS
• Created Date: Nov 14 1973 12:00AM