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Free-surface flow over a semicircular obstruction

Published online by Cambridge University Press:  20 April 2006

Lawrence K. Forbes
Affiliation:
Department of Applied Mathematics, University of Adelaide, South Australia 5000
Leonard W. Schwartz
Affiliation:
Department of Applied Mathematics, University of Adelaide, South Australia 5000

Abstract

The two-dimensional steady flow of a fluid over a semicircular obstacle on the bottom of a stream is discussed. A linearized theory is presented, along with a numerical method for the solution of the fully nonlinear problem. The nonlinear free-surface profile is obtained after solution of an integrodifferential equation coupled with the dynamic free-surface condition. The wave resistance of the semicircle is calculated from knowledge of the solution at the free surface.

Type
Research Article
Copyright
© 1972 Cambridge University Press

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References

Cokelet, E. D. 1977 Steep gravity waves in water of arbitrary uniform depth. Phil. Trans. R. Soc. Lond. A 286, 183230.Google Scholar
Gazdar, A. S. 1973 Generation of waves of small amplitude by an obstacle placed on the bottom of a running stream. J. Phys. Soc. Japan 34, 530538.Google Scholar
Haussling, H. J. & Coleman, R. M. 1977 Finite-difference computations using boundary-fitted coordinates for free-surface potential flows generated by submerged bodies. In Proc. 2nd Int. Conf. on Numerical Ship Hydrodynamics, Berkeley. pp. 221233.
Havelock, T. H. 1927 The method of images in some problems of surface waves. Proc. R. Soc. Lond. A 115, 268280.Google Scholar
Kochin, N. E., Kibel’, I. A. & Roze, N. V. 1964 Theoretical Hydromechanics. Wiley-Interscience.
Lamb, H. 1932 Hydrodynamics, 6th edn. Cambridge University Press.
Schwartz, L. W. 1974 Computer extension and analytic continuation of Stokes’ expansion for gravity waves. J. Fluid Mech. 62, 553578.Google Scholar
Schwartz, L. W. & Vanden-Broeck, J.-M. 1979 Numerical solution of the exact equations for capillary — gravity waves. J. Fluid Mech. 95, 119139.Google Scholar
Shanks, S. P. & Thompson, J. F. 1977 Numerical solution of the Navier — Stokes equations for 2D hydrofoils in or below a free surface. In Proc. 2nd Int. Conf. on Numerical Ship Hydrodynamics, Berkeley. pp. 202220.
Stokes, G. G. 1880 Mathematical and Physical Papers, vol. 1. Cambridge University Press.
Tuck, E. O. 1965 The effect of non-linearity at the free surface on flow past a submerged cylinder. J. Fluid Mech. 22, 401414.Google Scholar
Von Kerczek, C. & Salvesen, N. 1977 Non-linear free-surface effects — the dependence on Froude number. Proc. 2nd Int. Conf. on Numerical Ship Hydrodynamics, Berkeley. pp. 292300.
Wehausen, J. V. & Laitone, E. V. 1960 Surface waves. In Handbuch der Physik, vol. 9. Springer.
Yamada, H. 1957 On the highest solitary wave. Rep. Res. Inst. for Appl. Mech., Kyushu University no. 5, pp. 5367.Google Scholar