![]() ![]() Although the criterion cannot be used for a quantitative prediction of the shoreline response, it can function as a tool for the first assessment of the mode of shoreline response in cases of designing a coastal protection system based on multiple SBWs. This impact is made visible by analysing the availability of sediment and the different degree in wave sheltering with respect to a single SBW system. ![]() The extra term is based on a theoretical analysis and numerical modelling (Delft3D) of the impact of the lateral confinement ratio. The criterion to predict the mode of shoreline response (accretive versus erosive) to a single SBW is made applicable to multiple SBW cases by adding a term accounting for the added processes. However, in its current form, the criterion is only valid for single SBW systems. Because the design parameters can be used directly to predict a shoreline response via this criterion, it is deemed to be better suited for the objective of this thesis. This thesis will look into the existing criteria based on the physical parameters of the system. There exist multiple methods to predict if a certain SBW system will cause a 2-cell or 4-cell flow pattern. ![]() These patterns have comparable results in cases with a single SBW and cases with multiple SBWs. A 2-cell flow pattern causes a divergent flow at the shoreline and therefore local erosion, whereas a 4-cell flow pattern causes convergent flow at the shoreline with local accretion as a result. Studies showed that the initial mode of the shoreline response can be linked to the flow pattern observed in the lee of the SBW. The objective of this thesis is to develop a design criterion predicting the shoreline response to multiple SBWs. Added processes such as the distribution of the return flow and the (hydrodynamic) interaction between the separate SBWs induce a complex wave and flow pattern in the lee of the SBWs. This complexity further increases in the case of multiple SBWs. ![]() However, the actual application of SBWs is often discouraged because the complexity of the hydrodynamics in the vicinity of SBWs makes the shoreline response hard to predict. In addition, there is a possibility for recreational purposes. Compared to their emergent counterpart there is no impact on the beach amenity and aesthetics. Shore-parallel submerged breakwaters (SBWs) appear as an attractive form of coastal protection. on AI techniques and applications for civil and structural engineers, 1989.Developing a design criterion for the shoreline response to multiple submerged breakwaters A prolog-based representation of standards for structural design. NYU Symposium New Direction for Database Systems, 1984.ī. Databases in the fifth generation: Is prolog a database language. Shore Protection Manual, U.S Army Coastal Engineering Research Centre. et al, Two numerical wave models for harbours Proceedings of the International Conference on Numerical and Hydraulic Modelling of Ports and Harbours, BHRA, Birmingham, England, April 1985.ĬIAD Project Group, Computer aided evaluation of the reliability of a breakwater design CIAD Association, Zoetermeer, The Netherlands, 1985. et al, Mathematical models of wave climates for port design Proceedings of the Institution of Civil Engineers, Paper 9407, Vol. Proceedings of the International Symposium on Modelling Soil-Water Structure Interactions, Delft, Sept 1988 et al, Simulation of internal water movement in breakwaters. Hall, K.R, Numerical solutions to wave interactions with rubble mound breakwaters Canadian Journal of Civil Engineering Vol 17 no 2 April 1990 This process is experimental and the keywords may be updated as the learning algorithm improves. These keywords were added by machine and not by the authors. It is envisaged that the completed system will act as a prototype for use in the design office of the future. At the Hydraulics and Maritime Research Laboratory (HMRL) in Ireland such a system is being developed. This lack of knowledge can be addressed by developing an expert system that can store much of the information presently scattered in numerous design manuals and research papers. Very often the engineer is not aware of methods and techniques that could be of help in the design. What does exist is a multitude of empirical formulae and heuristic methods on which the engineer must base his design. Whereas such major structures as bridges and skyscrapers lend themselves easily to precise mathematical analysis the same cannot be applied to breakwaters. The design process for a breakwater is unlike that of almost all other civil engineering structures. ![]()
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