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Effect of Current on Spectrum of Breaking Waves in Water of Finite Depth

  • C. C. Tung
  • N. E. Huang
Conference paper
Part of the Lecture Notes in Engineering book series (LNENG, volume 31)

Abstract

This paper presents an approximate method to compute the mean value, the mean square value and the spectrum of waves in water of finite depth taking into account the effect of wave breaking with or without the presence of current. It is assumed that there exists a linear and Gaussian ideal wave train whose spectrum is first obtained using the wave energy flux balance equation without considering wave breaking. The Miche wave breaking criteron for waves in finite water depth is used to limit the wave elevation and establish an expression for the breaking wave elevation in terms of the elevation and its second time derivative of the ideal waves. Simple expressions for the mean value, the mean square value and the spectrum are obtained. These results are applied to the case in which a deep water unidirectional wave train, propagating normally towards a straight shoreline over gently varying sea bottom of parallel and straight contours, encounters an adverse steady current whose velocity is assumed to be uniformly distributed with depth. Numerical results are obtained and presented in graphical form.

Keywords

Wave Train Wave Spectrum Breaking Wave Surf Zone Finite Depth 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • C. C. Tung
    • 1
  • N. E. Huang
    • 2
  1. 1.North Carolina State UniversityRaleighUSA
  2. 2.Laboratory for OceansNASA Goddard Space Flight CenterGreenbeltUSA

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