Hostname: page-component-8448b6f56d-tj2md Total loading time: 0 Render date: 2024-04-23T18:36:44.367Z Has data issue: false hasContentIssue false

Long wavelength bifurcation of gravity waves on deep water

Published online by Cambridge University Press:  19 April 2006

P. G. Saffman
Affiliation:
Applied Mathematics, California Institute of Technology, Pasadena, California 91125

Abstract

Conditions are found for the appearance of non-uniform progressive waves of permanent form from a long-wave modulation of a finite-amplitude Stokes wave on deep water. The waveheight at which the modulated waves can occur is a very slowly decreasing function of the modulation wavelength for values up to 150 times the original wavelength. Some qualitative remarks are made about the problem of determining the stability of the new waves.

Type
Research Article
Copyright
© 1980 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

Chen, B. & Saffman, P. G. 1980 Numerical evidence for the existence of new types of gravity wave of permanent form on deep water. Stud. Appl. Math. 62, 121.Google Scholar
Cokelet, E. D. 1974 Steep gravity waves in water of arbitrary uniform depth. Phil. Trans. Roy. Soc. A. 286, 183230.Google Scholar
Garabedian, P. B. 1965 Surface waves of finite depth. J. D’ Analyse Math. 14, 161169.Google Scholar
Keller, H. B. 1977 Numerical solution of bifurcation and nonlinear eigenvalue problems. Applications of Bifurcation Theory, pp. 359384. Academic.
Lighthill, M. J. 1967 Some special cases treated by the Whitham theory. Proc. Roy. Soc. A 299, 2853.Google Scholar
Longuet-Higgins, M. S. 1975 Integral properties of periodic gravity waves of finite amplitude. Proc. Roy. Soc. A 342, 157174.Google Scholar
Longuet-Higgins, M. S. 1978a Some new relations between Stokes’ coefficients in the theory of gravity waves. J. Inst. Math. Applies. 22, 261273.Google Scholar
Longuet-Higgins, M. S. 1978b The instabilities of gravity waves of finite amplitude in deep water. II. Subharmonics. Proc. Roy. Soc. A 360, 489505.Google Scholar
Peregrine, D. H. & Thomas, G. P. 1979 Finite amplitude deep water waves on currents. Phil. Trans. Roy. A 292, 371390.Google Scholar
Saffman, P. G. & Szeto, R. 1980 Structure of a linear array of uniform vortices. Stud. Appl. Math. (to appear).Google Scholar
Schwartz, L. W. 1974 Computer extension and analytic continuation of Stokes expansion for gravity waves. J. Fluid Mech. 62, 553578.Google Scholar
Stokes, G. G. 1880 Supplement to a paper on the theory of oscillatory waves. Mathematical and Physical Papers, vol. 1, pp. 225228. Cambridge University Press.
Whitham, G. B. 1965 A general approach to linear and nonlinear dispersive waves using a Lagrangian. J. Fluid Mech. 22, 273283.Google Scholar
Whitham, G. B. 1970 Two-timing, variational principles and waves. J. Fluid Mech. 44, 373395.Google Scholar
Whitham, G. B. 1974 Linear and Non-linear waves. Wiley-Interscience.