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Record Details

Record 21 of 17823
Effect of current on spectrum of breaking waves in water of finite depth
External Online Source: doi:10.1016/0266-8920(87)90002-6
Author and Affiliation:
Tung, C. C.(North Carolina State University, Raleigh, United States)
Huang, N. E.(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
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 criterion 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.
Publication Date: Sep 01, 1987
Document ID:
19880032661
(Acquired Nov 28, 1995)
Accession Number: 88A19888
Subject Category: OCEANOGRAPHY
Document Type: Journal Article
Publication Information: Probabilistic Engineering Mechanics (ISSN 0266-8920); 2; 121-128
Publisher Information: United Kingdom
Financial Sponsor: NASA; United States
Organization Source: North Carolina State Univ.; Raleigh, NC, United States
NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 8p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: BREAKING; DEEP WATER; ENERGY SPECTRA; OCEAN CURRENTS; WATER WAVES; MEAN SQUARE VALUES; OCEAN BOTTOM; PROPAGATION MODES; WAVE PROPAGATION
Imprint And Other Notes: (U.S.-Austria Joint Seminar on Stochastic Structural Dynamics, Florida Atlantic University, Boca Raton, May 4, 5, 1987) Probabilistic Engineering Mechanics (ISSN 0266-8920), vol. 2, Sept. 1987, p. 121-128. Sponsorship: Navy-Army-suppoprted research.
Miscellaneous Notes: Sponsorship: Navy-Army-suppoprted research
Availability Source: Other Sources
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