Need an argumentative essay on Wave Overtopping on Coastal Structures. Needs to be 14 pages. Please no plagiarism.
Download file to see previous pages…
Traditionally, laboratory experiments and field observations have been used to study this turbulent oceanographic phenomenon and empirical formulae have been derived from these but severe limitations existed since parameters to which these derivations fitted were local (Shao, 2006). Thus, in recent time, universal derivations that can fit across a wide range of parametric requirements of structure geometry, water conditions and wave dynamics are considered essential and desirable. To this end, fluid dynamics proves a somewhat reliable model generator but traditional Eulerian approaches that discretise governing equations over a computational field divided into a grid system based on local parameters develop problems of numerical diffusion that transcends localised grid patterns and tend to encompass the entire grid so that the discretised development of the equation into an unified whole is seriously affected (Shao, 2006). More recently, to solve this diffusion effect for traditional dynamics, a particle method has been developed wherewith the discretised equation utlises individual particles in the flow as centres of development. The diffusion effect is effectively smoothed by a functional kernel that identifies and utilises the combined functions of the angular and linear momentums of each particle (Shao, 2006). The smoothing out of the diffusion effect generated at each particle location within the flow thus allows the fluid, in this case seawater in wave form, to be accounted for as an incompressible one (Shao, 2006). One such method that utilises this unique strategy is the moving particle semi-implicit method (MPS) applied somewhat successfully by Japanese scientists to wave flow patterns (Shao, 2006). The model that this paper will demonstrate is the smoothed particle hydrodynamic (SPH) method as developed and tested by Shao, 2006.