Seabed shear stresses under irregular waves plus current from Monte Carlo simulations of parameterized models

Lars Erik Holmedal*, Dag Myrhaug, Haavard Rue

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Shear stresses on a rough seabed under irregular waves plus current are calculated. Parameterized models valid for regular waves plus current have been used in Monte Carlo simulations, assuming the wave amplitudes to be Rayleigh-distributed. Numerical estimates of the probability distribution functions are presented. For waves only, the shear stress maxima follow a Weibull distribution, while for waves plus current, both the maximum and time-averaged shear stresses are well represented by a three-parameter Weibull distribution. The behaviour of the maximum shear stresses under a wide range of wave-current conditions has been investigated, and it appears that under certain conditions, the current has a significant influence on the maximum shear stresses. Results of comparison between predictions and measurements of the maximum bottom shear stresses from laboratory and field experiments are presented. (C) 2000 Elsevier Science B.V. All rights reserved.

Original languageEnglish (US)
Pages (from-to)123-147
Number of pages25
JournalCoastal Engineering
Volume39
Issue number2-4
DOIs
StatePublished - Mar 1 2000

Keywords

  • Current
  • Random waves
  • Seabed shear stresses
  • Statistical analysis

ASJC Scopus subject areas

  • Environmental Engineering
  • Ocean Engineering

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