自从模仿波浪的风波浪模型, Nearshore (天鹅)不能有效地包括波浪高度在侧面的边界,变化特征和计算波浪因素的失真范围附近模仿波浪地,时期,方向,并且计算领域的侧面的边界附近的长度小心地分别地在不同的水深度和风速度的情况中被学习。水深度和风的变化的效果在侧面的边界附近在建模的不同波浪因素上加速的计算结果表演是不同的。在某个风速度的情况中,水深度越大,失真范围是越多 greater。在某个水深度的情况中,波浪高度,时期,和长度的相对错误定义的失真范围与相应波浪因素的绝对错误定义的那些不同。而且,相对错误减少随风的增加定义的失真范围加速;而绝对错误定义的失真范围随着风速度的变化有点变化。有风速度的增加的波浪方向减少的失真范围。与 SWAN 一起的侧面的边界附近的计算波浪因素在实际物理区域当模特儿,例如在这研究考虑的泰胡湖和达恩尚湖,如果计算领域没根据实际物理区域被扩大,确实被弄歪。因此,当天鹅被采用计算风波浪时,地接近海或内陆湖的海岸线,适当途径必须被采用减少计算错误。
Since the wind wave model Simulating Waves Nearshore (SWAN) cannot effectively simulate the wave fields near the lateral boundaries, the change characteristics and the distortion ranges of calculated wave factors including wave heights, periods, directions, and lengths near the lateral boundaries of calculation domain are carefully studied in the case of different water depths and wind speeds respectively. The calculation results show that the effects of the variety of water depth and wind speed on the modeled different wave factors near the lateral boundaries are different. In the case of a certain wind speed, the greater the water depth is, the greater the distortion range is. In the case of a certain water depth, the distortion ranges defined by the relative errors of wave heights, periods, and lengths are different from those defined by the absolute errors of the corresponding wave factors. Moreover, the distortion ranges defined by the relative errors decrease with the increase of wind speed; whereas the distortion ranges defined by the absolute errors change a little with the variety of wind speed. The distortion range of wave direction decreases with the increase of wind speed. The calculated wave factors near the lateral boundaries with the SWAN model in the actual physical areas, such as Lake Taihu and Lake Dianshan considered in this study, are indeed distorted if the calculation domains are not enlarged on the basis of actual physical areas. Therefore, when SWAN is employed to calculate the wind wave fields near the shorelines of sea or inland lakes, the appropriate approaches must be adopted to reduce the calculation errors.