In consideration of the fact that the lack of wave observation data made in difficult to obtain deep water wave factors, a wave model of YW-WAM was established based on the observed data of wind field and the universal mathematical model WAM, which could provide rational design wave parameters for coastal engineering. the result of calculation with this model shows that the maximal relative error of wave height obtained with the model is 7% as compared with the measured data under the same wind field, while the maximal relative errors of wave height obtained by means of Code of Hydrology for Sea Harbor, Code of Design of Levee Project and SMB formula are 10%,30%, and 40% respectively as compared with the measured data, therefore, YW-WAM model can be applied to coastal engineering.
More and more coastal engineering such as ports, docks, bulwarks, etc. have been built or being constructed in the coastal area because of the needs for the oceanic economy. Some hydrodynamic factors (including water level, wave height, wave period, wave direction, etc.) in ocean environment should be obtained before designed these buildings. Among these hydrodynamic factors, the wave factors are the most important parameters because a lot of ocean and coastal engineering which are affected by wave effects. The wave parameters for engineering design are usually calculated by mathematics model. There are two kinds of method to obtain the wave parameters in deep water: The YW-WAM model was based on the third generation WAM model, some wave generation and dissipation processes are represented in YW-WAM model: generation by wind, dissipation by white-capping, dissipation by depth-induced wave breaking, dissipation by bottom friction and wave-wave interactions in both deep and shallow water. A detailed description of this model are given by Yin et al.(1996).