| SWAN模型模拟风浪场侧边界失真范围研究 |
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| 引用本文： | 张洪生,岳文翰,王真祥,许春辉.SWAN模型模拟风浪场侧边界失真范围研究[J].海洋工程,2014,32(6):91-97. |
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| 作者姓名： | 张洪生 岳文翰 王真祥 许春辉 |
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| 作者单位： | 1. 上海海事大学 海洋科学与工程学院,上海,201306
2. 长江水利委员会水文局长江口水文水资源勘测局,上海,200136 |
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| 基金项目： | 国家自然科学基金资助项目，上海市自然科学基金项目，上海市教委一流学科建设项目，2013年上海市研究生教育创新计划实施项目 |
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| 摘 要： | 鉴于SWAN模型存在着不能有效地模拟固壁边界附近风浪场的缺点,即在边界附近所模拟的波要素存在失真的现象,研究了在不同水深、风速和风向情况下模型侧边界附近波要素的失真范围,并对计算结果进行了详细的分析。结果表明水深、风速和风向对于侧边界附近波要素的失真范围具有不同的影响,即在风速一定的情况下,失真范围随着水深的增大而增大;水深一定的情况下,失真范围随着风速的增大而减小、随着风向的增大而增大。在利用SWAN模型模拟计算近岸或内陆湖泊风浪场时,必须采取适当的措施以减少实际计算域侧边界附近计算结果的失真范围。
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| 关 键 词： | SWAN模型 失真范围 风浪场 波要素 边界条件 |
Researches of distortion region near lateral boundaries for SWAN model calculating wind wave fields |
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| ZHANG Hong-sheng,YUE Wen-han,WANG Zhen-xiang and XU Chun-hui.Researches of distortion region near lateral boundaries for SWAN model calculating wind wave fields[J].Ocean Engineering,2014,32(6):91-97. |
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| Authors: | ZHANG Hong-sheng YUE Wen-han WANG Zhen-xiang and XU Chun-hui |
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| Institution: | Ocean Science and Engineering College, Shanghai Maritime University, Shanghai 201306, China;Ocean Science and Engineering College, Shanghai Maritime University, Shanghai 201306, China;Yangtze River Estuary Investigation Bureau of Hydrology and Water Resources, Yangtze River Water Resources Commission, Shanghai 200136, China;Ocean Science and Engineering College, Shanghai Maritime University, Shanghai 201306, China |
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| Abstract: | Because the wind wave model Simulating WAves Nearshore (SWAN) cannot effectively simulate the wave fields near the lateral boundaries, the distortion regions of calculated wave factors including wave heights, periods and directions near the lateral boundaries are carefully studied in the case of different water depths, wind speeds and wind directions respectively. The calculation results show that the effects of water depth, wind speed and wind direction on the distortion regions are different. In the case of a certain wind speed, the greater the water depth is, the larger the distortion region is; in the case of a certain water depth, the greater the wind speed is, the smaller the distortion region is, and the greater the wind direction is, the larger the distortion region is. Therefore, when SWAN is employed to calculate the wind wave fields near the shorelines of sea or of inland lakes, the appropriate methods must be adopted to reduce the calculation errors. |
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| Keywords: | SWAN model distortion region wind wave fields wave factors boundary condition |
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