Scour around Vertical Pile Foundations for Offshore Wind Turbines due to Long-Crested and Short-Crested Nonlinear Random Waves plus a Current

摘要

This paper provides a practical stochastic method by which the maximum equilibrium scour depth around vertical pilesexposed to long-crested (2D) and short-crested (3D) nonlinear random waves plus a current can be derived. Theapproach is based on assuming the waves to be a stationary narrow-band random process, adopting the Forristall(2000) wave crest height distribution representing both 2D and 3D nonlinear random waves, and using the formulas forthe scour depth by Sumer and Fredsøe (2002). An example calculation is provided.