OVERTOPPING FLOW CHARACTERISTICS AT EMERGED AND OVER-WASHED DYKES
ICCE 2014 Cover Image
PDF

Keywords

overtopping
overflow
flow depth
flow velocity
smooth dike
numerical modelling

How to Cite

Formentin, S. M., Zanuttigh, B., Van der Meer, J., & Lara, J. (2014). OVERTOPPING FLOW CHARACTERISTICS AT EMERGED AND OVER-WASHED DYKES. Coastal Engineering Proceedings, 1(34), structures.7. https://doi.org/10.9753/icce.v34.structures.7

Abstract

In the design of coastal defenses and in the estimate of their vulnerability a key aspect is the realistic prediction of the characteristics of the overtopping waves. In fact hydrodynamic forces on landward-side slopes largely depend on the distribution of instantaneous overtopping wave volumes, flow thicknesses and flow velocities. For emerged conditions, flow depths and velocities over the dike crest can be described by existing theoretical models, while for zero freeboard and submerged conditions there are some indications regarding the discharge and the flow characteristics in the literature but not systematically verified. Scope of this contribution is the characterization of the flow over smooth dike crests in case of frequently overtopped and over-washed based on a numerical database of more than 80 tests obtained with the Rans-Vof code (IH-2VOF) developed by the University of Cantabria on a smooth structure varying wave attacks, crest freeboard, seaward and landward slopes.
https://doi.org/10.9753/icce.v34.structures.7
PDF

References

Bosman, G, J.W. Van der Meer, G. Hoffmans, H. Schuttrumpf and H.J. Verhagen. 2008. Individual overtopping events at dikes. ASCE, proc. ICCE 2008, Hamburg, Germany, p. 2944-2956.

EurOtop, 2007. European Manual for the Assessment of Wave Overtopping. T. Pullen, N.W.H. Allsop,

T. Bruce, A. Kortenhaus, H. Schuttrumpf and J.W. van der Meer. At: www.overtopping-manual.com.

Garcia, N., Lara, J.L., Losada, I.J., 2004. 2-D numerical analysis of near-field flow at low-crested breakwaters. Coastal Engineering 51 (10), 991-1020.

Guanche, R., I.J. Losada and J.L. Lara., 2009. Numerical analysis of wave loads for coastal structure stability, Coastal Engineering, ELSEVIER, vol. 56, 543-558

Hsu, T.-J., 2002. A two-phase flow approach for sediment transport. PhD thesis, University, Ithaca, NY, USA.

Hughes, S. A., and N. C. Nadal, 2009. Laboratory study of combined wave overtopping and storm surge overflow of a levee, Coastal Engineering, Elsevier, 56(3), 244-259.

Kirby, J.T. 2003. Boussinesq models and applications to nearshore wave propagation, surf zone processes and wave-induced currents. In: Lakhan, C. (Ed.), Advances in Coastal Engineering. Elsevier, Amsterdam.

Kothe D.B., Mjolsness R. C., M. D.J. Torrey. 1991. RIPPLE: A computer program for incompressible flows with free surfaces, Report LA-12007, Los Alamos National Laboratory.

Lara, J.L., Losada, I.J., Liu, P.L.-F. 2006. Breaking waves over a mild gravel slope: experimental and numerical analysis. Journal of Geophysical Research, AGU, Vol. 111, C11019; doi: 10-1029/2005 JC003374.

Lara J.L., Losada I.J., R. Guanche. 2008. Wave interaction with low-mound breakwater using a rans model. Ocean Engineering, 56, 543-558.

Lara, J.L., Ruju, A. and Losada, I.J., 2011. Reynolds Averaged Navier-Stokes modelling of long waves induced by a transient wave group on a beach. Proceedings of the Royal Society A, vol. 467, 1215-1242.

Liu, P.L.-F., Lin, P., 1997. A numerical model for breaking waves: the volume of fluid method. Research Report No. CACR-97-02, Center for Applied Coastal Research, Ocean Engineering Laboratory, University of Delaware, Newark, DE.

Liu, P.L.-F., Lin, P., Chang, K.-A., Sakakiyama, T., 1999. Numerical modeling of wave interaction with porous structures. Journal of Waterway, Port, Coastal and Ocean Engineering, ASCE 125 (6), 322 - 330.

Losada, I.J., J.L. Lara, R. Guanche and J.M. Gonzalez-Ondina, 2008. Numerical analysis of wave overtopping of rubble mound breakwaters, Coastal Engineering, ELSEVIER, 55(1), 47-62.

Raosa, A. N., Zanuttigh, B., Lara, J. L. & S. Hughes, 2012. 2DV VOF numerical modelling of wave overtopping over overwashed dikes, Proc. of the 33rd International Conference On Coastal Engineering, vol. 1, ISSN: 2156-1028, Santander, 2-6 July 2012, 15pp., doi: 10.9753/icce.v33.waves.62

Raosa, A.N. 2014. Analysis and mathematical modelling of wave structure interaction. PhD thesis, University of Bologna.

Schuttrumpf H., H. Oumeraci. 2005. Layer thicknesses and velocities of wave overtopping flow at sea dikes, Coastal Engineering, 52 (6), 473-495.

Schuttrumpf, H., van Gent, M.R., 2003. Wave overtopping at seadikes. Proceedings of Coastal Structures. American Society of Civil Engineers, pp. 431-443.

Schuttrumpf, H.F.R. 2001. Wellenuberlaufströmung bei See-deichen, Ph.D.-thesis, Technical University Braunschweig.

Torres-Freyermuth, A., Lara, J.L. and Losada, I.J., 2010. Numerical modelling of short and long-wave transformation on a barred beach. Coastal Engineering, vol. 57, 317-330.

Van der Meer, J.W., B. Hardeman, G.J. Steendam, H. Schuttrumpf and H. Verheij, 2010. Flow depths and velocities at crest and inner slope of a dike, in theory and with the Wave Overtopping Simulator. ASCE, Proc. of the 32rd International Conference On Coastal Engineering, Shanghai.

Van der Meer, J.W., Schrijver R., Hardeman B., Van Hoven A., Verheij H and Steendam G.J. 2009. Guidance on erosion resistance of inner slopes of dikes from three years of testing with the Wave Overtopping Simulator. Proc. ICE, Breakwaters, Marine Structures and Coastlines;

Edinburgh, UK.

Van der Meer J.W., Bruce T., Allsop N.W.H., Franco L, Kortenhaus A, Pullen T. and Schuttrumpf H. 2013. EurOtop revisited. Part 1: Sloping structures. Proc. ICE, Coasts, Marine Structures and Breakwaters, Edinburgh, UK.

Van Gent M.R. 2002. Wave overtopping events at dikes. Proceedings of the 28th International Coastal Engineering Conference, vol. 2. World Scientific, 2203-2215.

Zanuttigh, B. and J.W. van der Meer. Wave reflection from coastal structures. ASCE, Proceedings of the 30th International Coastal Engineering Conference, San Diego. pp. 4337-4349.

Zanuttigh, B., J.W. van der Meer, T. Bruce and S. Hughes. 2013. Statistical characterisation of extreme overtopping wave volumes. Proc ICE, Coasts, Marine Structures and Breakwaters, Edinburgh, UK.

Zanuttigh, B. & A. Lamberti, 2006. Experimental analysis and numerical simulations of waves and current flows around low-crested coastal defence structures, Journal of Waterway, Port, Coastal and Ocean Engineering, 132 (1), 10-27, ASCE.

Zanuttigh, B., Martinelli, L. and Lamberti, A. 2008. Wave overtopping and piling-up at permeable low-crested structures, Coastal Engineering, 55, 484-498, Elsevier.

Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.