Research Article
Nov 1975
Statistics of Random Wave Field
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VIEW THE REPLYPublication: Journal of the Waterways, Harbors and Coastal Engineering Division
Volume 101, Issue 4
Abstract
The effects of free surface fluctuations on the probability density function and spectrum of fluid particle velocities and pressure of a random gravity wave field are examined. The waves are assumed to be unidirectional, stationary, Gaussian, and in deep water. These are the usual assumptions of incompressible inviscid fluid and irrotational motion and wave. Expressions of the probability density function and spectrum of velocities and pressure are derived, and numerical results are obtained and presented graphically. Comparisons are made with the case in which the free surface fluctuations phenomenon is ignored. Results indicate that the quantities are all non-Gaussian. Pressure and horizontal velocity is unskewed and zero-mean. With and without the free surface fluctuations phenomenon considered, the spectra of the velocities and pressure differ appreciably; the difference being most pronounced at points above and around the mean water level.
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Published In
Journal of the Waterways, Harbors and Coastal Engineering Division
Volume 101 • Issue 4 • November 1975
Pages: 435 - 449
Copyright
© 1975 American Society of Civil Engineers.
History
Published in print: Nov 1975
Published online: Feb 12, 2021
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Authors
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Keikhosrow Pajouhi
Struct. Engr., Worley Engrg., Houston, Texas; formerly, Grad. Student, North Carolina State Univ., Raleigh, N.C.
Chi C. Tung, AM.ASCE
Assoc. Prof. of Civ. Engrg., North Carolina State Univ., Raleigh, N.C.
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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.