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Journal Article•DOI•

Ocean wave simulation for engineering design

01 Oct 1967-Journal of the Waterways and Harbors Division (ASCE)-Vol. 95, Iss: 4, pp 557-586
TL;DR: In this paper, the authors investigated possible ways of increasing the efficiency and realism of the ocean wave and force simulations produced by simulation procedures.Simulation procedures have not been used extensively in coastal engineering and ocean wave problems although several oil companies have used these techniques.
Abstract: Simulation procedures have not been used extensively in coastal engineering and ocean wave problems although several oil companies have used these techniques The following study was undertaken to make the procedures more available to the engineer working with ocean wave problems and to investigate possible ways of increasing the efficiency and the realism of the ocean wave and force simulations produced Techniques for simulating ocean waves are most applicable when the response of the structure is complicated and perhaps involves other random environmental factors which may be introduced by concurrent simulations The accuracy of the wave simulation is greatest for low amplitude waves and decreases for large steep waves The degree of loss in accuracy for the higher and steeper waves deserves further research Simulation techniques have the disadvantage of being time consuming and usually requiring the use of computers Analytic solutions are to be preferred if feasible Sometimes part of a problem can be solved analytically and then the intractable parts processed by simulation A detailed search for shortcuts and approximations before proceeding with the actual simulation will often result in sizeable savings of computer time

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Citations
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Journal Article•DOI•
TL;DR: In this article, the authors presented an efficient method for digital simulation of general homogeneous processes as a series of cosine functions with weighted amplitudes, almost evenly spaced frequencies, and random phase angles.

1,460 citations

Journal Article•DOI•
Masanobu Shinozuka1•
TL;DR: A technique of digital simulation of multivariate and/or multidimensional Gaussian random processes (homogeneous or nonhomogeneous) which can represent physical processes germane to structural engineering is presented.

534 citations

Journal Article•DOI•
01 Jun 1983
TL;DR: In this article, an analytical/numerical technique is presented that provides a solution to the parabolic wave equation and allows for direct calculation of the received time-domain signal after propagation of a widebandwidth waveform through a turbulent ionized medium.
Abstract: An analytical/numerical technique is presented that provides a solution to the parabolic wave equation and allows for direct calculation of the received time-domain signal after propagation of a wide-bandwidth waveform through a turbulent ionized medium. The results are applicable to the case of satellite communication or to radar observation through a frequency-selective transionospheric propagation channel. A number of examples of the application of multiple phase-screen (MPS) techniques are given that enhance intuitive understanding of wave propagation. Numerical predictions of scattering through a striated barium cloud are compared to experimental observations. Good agreement is also shown between MPS calculations and theoretical results for cases in both weak and strong scattering regimes.

250 citations

Journal Article•DOI•
TL;DR: In this article, a family of renewed spectral representation schemes is proposed, where the selected random function serves as a random constraint correlating the random variables included in the spectral representation scheme.

164 citations

Journal Article•DOI•
Ahsan Kareem1•
TL;DR: In this paper, Monte Carlo-based approaches are employed for numerical simulations of wind loads and their effects in the design of structures to ensure their safety under winds and their response and assessment of attendant functionality and safety under service and design loads.

142 citations