Effect of the current-wave angle on the local scour around circular piles

This paper studies the effect of the wave front-current angle on the scour around a circular pile. An experimental study was carried out in the Coastal, Ocean and Sediment Transport (COAST) laboratory at the University of Plymouth (UK) using a single monopile of 0.125 m in diameter and an 8 m long b...

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Bibliographic Details
Authors: Torre Rodríguez, Óscar de la, Hann, Martyn, Miles, Jon, Stripling, Stuart, Greaves, Deborah
Format: article
Publication Date:2021
Country:España
Institution:Universitat Politècnica de Catalunya (UPC)
Repository:UPCommons. Portal del coneixement obert de la UPC
Language:English
OAI Identifier:oai:upcommons.upc.edu:2117/354405
Online Access:https://hdl.handle.net/2117/354405
https://dx.doi.org/10.1061/(ASCE)WW.1943-5460.0000692
Access Level:Open access
Keyword:Ocean currents
Sediment transport
Scour
Monopile
Wave-current interaction
Corrents marins
Sediments (Geologia) -- Transport
Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids
Description
Summary:This paper studies the effect of the wave front-current angle on the scour around a circular pile. An experimental study was carried out in the Coastal, Ocean and Sediment Transport (COAST) laboratory at the University of Plymouth (UK) using a single monopile of 0.125 m in diameter and an 8 m long by 1.5 m wide by 0.2 m high sand pit. The results obtained during the test campaign show the influence of the angle between waves and currents on both the maximum scour depth and the time scale of the process. Wave fronts partially aligned with current (65°) produce deeper scour holes than perpendicular forcing conditions (90°). Wave fronts partially against the current (115°) produce less scour than any of the two previous scenarios. The addition of waves reduced the maximum scour depth, compared with the current-only case. The development of the scour hole was found to be more rapid when waves are added to the current, with 50% of the final scour achieved in half the time. The results show that wave direction relative to the current is an important component in scour prediction.

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