HRPP 492 in coastal waters HR Wallingford（在沿海水域HR瓦林福德HRPP 492）.pdfVIP

2 A Lagrangian model for simulating 9 the dispersal of sand-sized particles 4 in coastal waters P P R H R. L. Soulsby, C.T. Mead, B.R. Wild and M.J. Wood Preprint of a paper published in: Journal of Waterway, Port, Coastal, and Ocean Engineering 137 (3). (2011) A Lagrangian model for simulating the dispersal of sand-sized particles in coastal waters Reference A Lagrangian Model For Simulating The Dispersal Of Sand-Sized Particles In Coastal Waters 1 1 1 1 R. L. Soulsby , C.T. Mead , B.R. Wild and M.J. Wood 1 HR Wallingford, Howbery Park, Wallingford, Oxfordshire, OX10 8BA Abstract A model, SandTrack, has been established to simulate movements of sand-sized particles in coastal waters within a Lagrangian framework. The model can be applied to assess the dispersal of contaminated particulate material, such as may be associated with industrial discharges, or the dispersal of dredged spoil. For such applications, the Lagrangian approach is essential, as the identity of the particles is important. Although Lagrangian models existed previously which could simulate fine sediment constantly in suspension, there are certain applications, such as dealing with the movement of bed particles, in which intermittent physical processes are critical. SandTrack has been tested against field observations from the coastal waters near Dounreay, United Kingdom. The tests strengthened confidence in the model predictions, and enabled appropriate values of some of the model’s main physical parameters to be set. Some features of the particle distributions simulated by SandTrack are consistent with field observations, and are not achievable with simpler sedi