Numerical Investigation of Scour Around Monopile Foundation of Offshore Wind Farm

Author:

Otoo Ebenezer1,Asumadu Richard2,Boadii Gideon Kwabena1,Zhang Jisheng1,Boadu Solomon1,Mattah Precious2

Affiliation:

1. Hohai University

2. University of Cape Coast

Abstract

Abstract Local scour has been a major challenge facing stability of offshore wind farm foundations for years. This study uses a 3D numerical model to study the formation and development of scour at the foot of monopile foundations. The Reynolds-Averaged Navier-Stokes (RANS) with RNG k − ε turbulence model equations were used to study the interaction mechanism of the scour around the structure. The influence of flow velocity and particle size on the maximum scour depth and the extent of the scour footprint were examined. The results indicated that the diameter of the sediment also influences its susceptibility to scour. The finer the sediment, the more susceptible the bed is to scour, and the coarser the sediments are, the less susceptible they are to scour.

Publisher

Research Square Platform LLC

Reference35 articles.

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3. Baykal, C. et al. (2015) ‘Numerical investigation of flow and scour around a vertical circular cylinder’, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. The Royal Society Publishing, 373(2033), p. 20140104.

4. Boroomand, M. R., Salehi Neyshabouri, S. A. A. and Aghajanloo, K. (2007) ‘Numerical simulation of sediment transport and scouring by an offset jet’, Canadian Journal of Civil Engineering. NRC Research Press Ottawa, Canada, 34(10), pp. 1267–1275.

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