Scour below marine pipelines in shoaling conditions for random waves |
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| Authors: | Dag Myrhaug Muk Chen Ong Cecilie Gjengedal |
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| Institution: | aDepartment of Marine Technology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway |
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| Abstract: | This paper provides an approach by which the scour depth below pipelines in shoaling conditions beneath non-breaking and breaking random waves can be derived. Here the scour depth formula in shoaling conditions for regular non-breaking and breaking waves with normal incidence to the pipeline presented by Cevik and Yüksel Cevik, E. and Yüksel, Y., (1999). Scour under submarine pipelines in waves in shoaling conditions. ASCE J. Waterw., Port, Coast. Ocean Eng., 125 (1), 9–19.] combined with the wave height distribution including shoaling and breaking waves presented by Mendez et al. Mendez, F.J., Losada, I.J. and Medina, R., (2004). Transformation model of wave height distribution on planar beaches. Coast. Eng. 50 (3), 97–115.] are used. Moreover, the approach is based on describing the wave motion as a stationary Gaussian narrow-band random process. An example of calculation is also presented. |
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| Keywords: | Scour depth Pipeline Shear stress Shoaling Breaking Random waves Stochastic approach |
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