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在太湖实际波浪观测的基础上,采用率定验证后的第三代动谱平衡方程,考虑实际水底地形、波浪折射、浅化、反射、破碎、湖流等条件下,对太湖波浪进行数值模拟,研究太湖波浪的主要影响因素.结果表明:SWAN模型可以较好地模拟风作用下太湖风浪的生成和传播过程,模型在太湖应用是合适的;波高、波长、波周期等波浪参数在太湖的分布与风速、风向、水深等因素密切相关;在相同风向、不同风速情况下,太湖波浪发展至稳定状态的时间不一样;在不同风向,相同风速持续作用下,有效波高达到稳定的时间差不多,变化趋势也比较相同.说明波浪的发展不光取决于风速的大小,还同风的持续吹的时间和风区长度有关.
Based on the actual wave observation in Taihu Lake, the third generation of dynamic equilibrium equation after rate verification is used, and the waves in Taihu Lake are numerically simulated under the conditions of actual underwater topography, wave refraction, shallowing, reflection, crushing and lake flow , The main influencing factors of wave in Taihu Lake are studied.The results show that the SWAN model can well simulate the formation and propagation of wind and waves in Taihu Lake under the action of wind and the model is suitable for Taihu Lake application.Wave parameters such as wave height, The distribution is closely related to the wind speed, wind direction, water depth and other factors. Under the same wind direction and different wind speed, the time for the waves in Taihu Lake to develop into a stable state is different. Under the continuous action of different wind directions and same wind speed, the effective wave reaches the stable time almost, The trend is also more similar, indicating that the development of the wave depends not only on the size of the wind speed, but also on the duration of the wind blowing and the length of the wind zone.