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|Title: ||Efficient non-hydrostatic modeling for free surface waves in deep and shallow water|
|Authors: ||Chin H. Wu;Chih-Chieh Young|
|Issue Date: ||2017-10-24T08:47:18Z
|Publisher: ||ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering|
|Abstract: ||Abstract:A novel approach that introduces the Boussinesq-type like equations into an implicit non-hydrostatic model, free of irrotational flow assumption, is presented. The basic concept is to obtain an analytical-based form of pressure distribution at the top layer by matching the reference velocity under a virtual grid system with the one under a non-hydrostatic model grid system. Locations of the references velocities are tuned to optimize the linear wave dispersion property in the model. Efficiency of this non-hydrostatic model with Boussinesq-type equations (NHM-BTE) is critically examined through several free-surface wave examples. Overall model results show that NHM-BTE using only a few vertical layers (i.e., two ∼ four) is capable of accurately simulating highly dispersive wave motion and wave transformation over irregular bathymetry.|
|Appears in Collections:||[海洋環境資訊系] 演講及研討會|
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