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Interaction of capillary waves with longer waves. Part 1. General theory and specific applications to waves in one dimension

Published online by Cambridge University Press:  26 April 2006

Kenneth M. Watson
Affiliation:
Marine Physical Laboratory, Scripps Institution of Oceanography, University of California at San Diego, CA 92093–0213, USA
Steven B. Buchsbaum
Affiliation:
Science Applications International Corporation, 10260 Campus Point Drive, San Diego, CA 92121, USA

Abstract

A Hamiltonian formulation is used to investigate irrotational capillary wave dynamics. Dissipation is accounted for by putting the wave system in contact with a ‘heat bath’. The generation of short waves by longer waves is studied. It is found that millimetre-wavelength waves tend to be created on the forward face of a steep longer wave, while centimetre waves tend to form near the crest. Generation of capillary waves by wind waves is investigated. The results are compared with predictions of the Hasselmann transport equation. It is found that off-resonance interactions lead to significant corrections to the transport theory. The relative importance of three-wave and four-wave interactions is studied, as well as the role of triad resonances. For the capillary phenomena studied here, the four-wave terms in most cases lead to quantitative, but not qualitative, corrections to the three-wave only calculations. However, restricting interactions to the neighbourhood of triad resonances can give quite erroneous results. Use of a canonical transformation to pseudo-wave variables can greatly reduce numerical computation times.

Type
Research Article
Copyright
© 1996 Cambridge University Press

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References

Apel, J. R. 1994 An improved model of the ocean surface wave vector spectrum and its effects on radar backscatter. J. Geophys. Res. 99, 1626916291.Google Scholar
Benjamin, T. B. 1967 Instability of periodic wavetrains in nonlinear dispersive systems. Proc. R. Soc. Lond. A 299, 5975.Google Scholar
Benjamin, T. B. & Feir, J. E. 1967 The disintegration of wave trains in deep water. Part 1. Theory. J. Fluid Mech. 27, 417430.Google Scholar
Chirikov, B. V. 1977 A universal instability of many-dimensional oscillator systems. Phys. Rep. 52, 264379.Google Scholar
Cohen, B. L., Watson, K. M. & West, B. J. 1976 Some properties of deep water solitons. Phys. Fluids 19, 345354.Google Scholar
Cox, C. S. 1958 Measurements of slopes of high-frequency wind waves. J. Mar. Res. 16, 199225.Google Scholar
Creamer, D., Henyey, F., Schult, R. & Wright, J. 1989 Improved linear representation of ocean surface waves. J. Fluid Mech. 205, 135161.Google Scholar
Donelan, M. & Pierson, W. 1987 Radar scattering and equilibrium ranges in wind-generated waves with applications to scatterometry. J. Geophys. Res. 92, 49715030.Google Scholar
Duncan, J. H., Philomin, V., Behres, M. & Kimmel, J. 1994 The formation of spilling breaking water waves. Phys. Fluids 6, 25582560.Google Scholar
Ebuchi, N., Kawamura, H. & Toba, Y. 1987 Fine structure of laboratory wind wave surfaces studied using optical method. Boundary-Layer Met. 39, 133151.Google Scholar
Freilich, M. H. & Guza, R. T. 1984 Nonlinear effects on shoaling surface gravity waves. Phil. Trans. R. Soc. Lond. A 311, 141.Google Scholar
Gastel, K. Van 1987a Nonlinear interactions of gravity-capillary waves: Lagrangian theory and effects on the spectrum. J. Fluid Mech. 182, 499523.Google Scholar
Gastel, K. Van 1987b Imaging by X-Band radar of subsurface features: A nonlinear phenomena. J. Geophys. Res. 92, 1185711866.Google Scholar
Goldstein, H. 1969 Classical Mechanics. Addison-Wesley.
Hasselmann K. 1968 Weak-interaction theory of ocean waves. In Basic Developments in Fluid Mechanics (ed. M. Holt), pp. 117182. Academic.
Henderson, D. M. & Hammack, J. 1987 Experiments on ripple instabilities: Part 1. Resonant triads. J. Fluid Mech. 184, 1541.Google Scholar
Holliday, D. 1977 On nonlinear interactions in a spectrum of inviscid gravity-capillary surface waves. J. Fluid Mech. 83, 737739.Google Scholar
Jähne, B. & Riemer, K. 1990 Two-dimensional wave number spectra of small scale water surface waves. J. Geophys. Res. 95, 1153111546.Google Scholar
Klinke, J. & Jähne, B. 1992 2D wave number spectra of short wind waves-results from wind wave facilities and extrapolation to the ocean. In Optics of the Air-Sea Interface: Theory and Measurements. Proc. SPIE 1749, Inst. Soc. Optical Engng, pp. 113.
Longuet-Higgins, M. S. 1963 The generation of capillary waves by steep gravity waves. J. Fluid Mech. 16, 138159.Google Scholar
Longuet-Higgins, M. S. 1992 Capillary rollers and bores. J. Fluid Mech. 240, 659679.Google Scholar
Longuet-Higgins, M. S. 1995 Parasitic capillary waves: a direct calculation. J. Fluid Mech. 301, 79107.Google Scholar
Longuet-Higgins, M.S. & Cleaver, R. P. 1994 Crest instability of gravity waves. Part 1. The almost-highest wave. J. Fluid Mech. 258, 115129.Google Scholar
Longuet-Higgins, M. S., Cleaver, R. P. & Fox, M. J. H. 1994 Crest instabilities of gravity waves. Part 2. Matching and asymptotic analysis. J. Fluid Mech. 259, 333344.Google Scholar
McGoldrick, L. F. 1965 Resonant interactions among capillary waves. J. Fluid Mech. 21, 305331.Google Scholar
Meiss, J. & Watson, K. 1978 Discussion of some weakly nonlinear systems in continuum mechanics. In Topics in Nonlinear Dynamics (ed. S. Jorna) AIP Conf. Proc. 46, pp. 296323.
Milder, D. M. 1990 The effects of truncation on surface-wave Hamiltonians. J. Fluid Mech. 217, 249262.Google Scholar
Miles, J. 1957 On the generation of surface waves by shear flows. J. Fluid Mech. 3, 185204.Google Scholar
Miles, J. W. 1977 On Hamilton's principle for surface waves. J. Fluid Mech. 83, 153164.Google Scholar
Miller, S., Shemdin, O. & Longuet-Higgins, M. 1992 Laboratory measurements of modulation of short wave slopes by long surface waves. J. Fluid Mech. 233, 389404.Google Scholar
Perlin, M., Lin, H. & Ting, C.-L. 1993 On parastic capillary waves generated by steep gravity waves: an experimental investigation with spatial and temporal measurements. J. Fluid Mech. 255, 597620.Google Scholar
Press, P., Teukolsky, S., Vetterling, W. & Flannery, B. 1992 Numerial Recipes in Fortran. Cambridge University Press.
Valenzuela, G. & Liang, M. 1972 Nonlinear energy transfer in gravity-capillary wave spectra with applications. J. Fluid Mech. 54, 507520.Google Scholar
Watson, K. M. & McBride, J. B. 1993 Excitation of capillary waves by longer waves. J. Fluid Mech. 250, 103119.Google Scholar
Whitham, G. B. 1974 Linear and Nonlinear Waves, p. 530. John Wiley & Sons.
Wilton, J. R. 1915 On ripples. Phil. Mag. 29 (6), 688700.Google Scholar
Zakharov, V. E. 1968 Stability of periodic waves of finite amplitude on the surface of deep fluid. J. Appl. Mech. Tech Phys. (English transl.) 2, 190194.Google Scholar
Zhang, X. 1995 Capillary-gravity and capillary waves generated in a wind wave tank: observations and theories. J. Fluid Mech. 289, 5182.Google Scholar
Zhang, X. & Cox, C. S. 1994 Measuring the two dimensional structure of a wavy water wave surface optically: a surface gradient detector. Exps. Fluids 17, 225237.Google Scholar