Research Article
Nov 1982
Comparisons of Numerical Random Sea Simulations
Authors: Hang Tuah and Robert T. Hudspeth, M.ASCEAuthor Affiliations
Publication: Journal of the Waterway, Port, Coastal and Ocean Division
Volume 108, Issue 4
Abstract
Two numerical models previously developed by Rice for modeling Gaussian, white-noise, electronic signals are used to simulate in the frequency domain nonlinear random ocean waves in water of finite depth. The following two models were developed by Rice: (1) Nondeterministic Spectral Amplitude model (NSA), and (2) Deterministic Spectral Amplitude model (DSA). These two Rice models are used with finite Fourier transform (FFT) algorithm to simulate linear Gaussian random wave realizations by the process of filtering Gaussian white noise in the frequency domain. A nonlinear random wave interaction matrix then operates on the linear Gaussian wave spectra to generate a complex-valued nonlinear random wave spectrum that is correct to second-order in the Stoke's wave perturbation parameter. Both the lineear and the nonlinear realizations obtained from both of Rice's two simulation models are compared with a realization obtained from hurricane-generated real ocean waves measured in the Gulf of Mexico. Statistical comparisons indicate that the NSA Rice model is better for both linear and nonlinear random wave simulations when band-limited white noise is digitally filtered.
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Information
Published In
Journal of the Waterway, Port, Coastal and Ocean Division
Volume 108 • Issue 4 • November 1982
Pages: 569 - 584
Copyright
© 1982 American Society of Civil Engineers.
History
Published in print: Nov 1982
Published online: Feb 12, 2021
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Hang Tuah
Grad. Student, Ocean Engrg. Program, Dept. of Civ. Engrg., Oregon State Univ., Corvallis, Oreg. 97331
Robert T. Hudspeth, M.ASCE
Assoc. Prof., Ocean Engrg. Program, Dept. of Civ. Engrg., Oregon State Univ., Corvallis, Oreg. 97331
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.