Hostname: page-component-cd9895bd7-dzt6s Total loading time: 0 Render date: 2024-12-28T22:26:02.600Z Has data issue: false hasContentIssue false
  • English
  • Français

Aerodynamic characteristics of a two-dimensional porous sail

Published online by Cambridge University Press:  26 April 2006

S. Murata  and
S. Tanaka
S. Murata
Affiliation:
Toyota Technological Institute, 2-12 Hisakata, Tempaku, Nagoya, 468 Japan
S. Tanaka
Affiliation:
Toyota Technological Institute, 2-12 Hisakata, Tempaku, Nagoya, 468 Japan
Get access Rights & Permissions [Opens in a new window]

Abstract

A method is presented for the numerical analysis of the aerodynamic characteristics of a two-dimensional single-surface porous sail. In this analysis the authors apply a series of Jacobi polynomials to express the pressure distribution and chordwise shape, considering carefully leading-edge conditions. It is found that the aero-dynamic stability of a sail increases with increasing porosity. The effects of porosity on the value of the life coefficient and the position of the centre of pressure are shown in diagrams as functions of angle of attack and of excess length of membrane over the chord length.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 206 , September 1989 , pp. 463 - 475
Copyright
© 1989 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Barakat, R. 1968 Incompressible flow around porous two-dimensional sails and wings. J. Maths Phys. 47, 327–349.Google Scholar
Erdogan, F., Gupta, G. D. & Cook, T. S. 1973 Numerical solution of singular integral equations. In Method of Analysis and Solution of Crack Problems (ed. G. C. Shi), pp. 368–425. Noordhoff.
Gradshteyn, I. S. & Ryzhik, I. M. 1980 Tables of Integral Series and Products. Academic.
Murai, H. & Maruyama, S. 1982 Theoretical investigation of sailwing airfoils taking account of elasticities. J. Aircraft 19, 385–389.Google Scholar
Newman, B. G. & Low, H. T. 1984 Two-dimensional impervious sails: experimental results compared with theory. J. Fluid Mech. 144, 445–462.Google Scholar
Nielsen, J. N. 1963 Theory of flexible aerodynamic surfaces. Trans. ASME E: J. Appl. Mech. 30, 435–442.Google Scholar
Sneyd, A. D. 1984 Aerodynamic coefficients and longitudinal stability of sail aerofoils. J. Fluid Mech. 149, 127–146.Google Scholar
Thwaites, B. 1961 Aerodynamic theory of sails.. Proc. R. Soc. Lond. A 261, 402–422.Google Scholar
Vanden-Broeck, J.-M. 1982 Nonlinear two-dimensional sail theory. Phys. Fluids 25, 420–422.Google Scholar
Voelz, K. Van 1950 Profil und Auftrieb eines Segels. Z. Angew. Math. Mech. 30, 301–317.Google Scholar