Distribution of crest amplitudes in severe seas with breaking. [Calculation of wave forces acting on offshore platforms]

Journal Article · Mon Feb 01 04:00:00 EST 1993 · Journal of Offshore Mechanics and Arctic Engineering; (United States)

DOI:https://doi.org/10.1115/1.2920097· OSTI ID:5965457

Kriebel, D L; Dawson, T H ^[1]

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1. Naval Academy, Annapolis, MD (United States)

A theoretical model is presented for the probability distribution of wave crest amplitudes in severe seas states with wave breaking. As the severity of a sea state increases, nonlinearities cause an increase in the amplitudes of the largest wave crests with a subsequent modification of the distribution of wave crest amplitudes from the linear Rayleigh theory. In this paper, a theory for the probabilities of these nonlinear crest amplitudes is first reviewed based on earlier work. The further limitations on these nonlinear crest amplitudes by wave breaking are then considered. As a result, a theoretical model is presented to account for both: (1) the nonlinear increase in the highest wave crests, and (2) the selective reduction of some fraction of these high crests due to wave breaking. This model is then verified using several sets of laboratory data for severe breaking seas having approximate JONSWAP wave spectra.

• OSTI ID: 5965457
• Journal Information: Journal of Offshore Mechanics and Arctic Engineering; (United States), Journal Name: Journal of Offshore Mechanics and Arctic Engineering; (United States) Vol. 115:1; ISSN 0892-7219; ISSN JMOEEX
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
423000* -- Engineering-- Marine Engineering-- (1980-)
AMPLITUDES
BENCH-SCALE EXPERIMENTS
CALCULATION METHODS
DYNAMIC LOADS
ENGINEERING
FUNCTIONS
GRAVITY WAVES
MATHEMATICAL MODELS
OFFSHORE PLATFORMS
OFFSHORE SITES
RESPONSE FUNCTIONS
SAFETY ENGINEERING
WATER WAVES
WAVE FORCES