| 基于非静压模型的非淹没刚性植物消波特性数值模拟研究 |
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| 引用本文： | 蒋昌波,徐进,邓斌,陈杰,屈科.基于非静压模型的非淹没刚性植物消波特性数值模拟研究[J].海洋通报,2019,38(5):591-600. |
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| 作者姓名： | 蒋昌波 徐进 邓斌 陈杰 屈科 |
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| 作者单位： | 长沙理工大学水利工程学院,湖南长沙410114;水沙科学与水灾害防治湖南省重点实验室,湖南长沙410114;长沙理工大学水科学与环境工程国际研究中心,湖南长沙410114;长沙理工大学水利工程学院,湖南长沙,410114 |
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| 基金项目： | 国家自然科学基金重点项目（51839002）；国家自然科学基金（51879015,51809021) |
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| 摘 要： | 基于非静压单相流模型NHWAVE,设计不同的计算工况,系统研究了规则波与非规则波作用下,非淹没刚性植物的消波特性。将计算结果和实验数据进行对比分析,验证了非静压模型NHWAVE计算植物消波特性的准确性。进一步研究了波高、周期和水深等因素对植物消波特性的影响,探讨了植物消波特性与这些水动力因素的内在联系。结果表明:非淹没刚性植物的消波效率受波高和周期的影响较大,水深对消波效率的影响很小。由于波浪非线性的影响,基于线性波理论的消波理论模型对植物消波能力的估计偏小。
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| 关 键 词： | NHWAVE 拖曳力系数 植物消波 规则波 非规则波 刚性植物 |
| 收稿时间： | 2018/11/11 0:00:00 |
| 修稿时间： | 2019/1/16 0:00:00 |
Numerical investigation of wave attenuation through non-submerged rigid vegetation by a nonhydrostatic model |
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| JIANG Chang-bo,XU Jin,DENG Bin,CHEN Jie and QU Ke.Numerical investigation of wave attenuation through non-submerged rigid vegetation by a nonhydrostatic model[J].Marine Science Bulletin,2019,38(5):591-600. |
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| Authors: | JIANG Chang-bo XU Jin DENG Bin CHEN Jie and QU Ke |
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| Institution: | School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China; Key Laboratory of Water Sediment Sciencesand Water Disaster Prevention of Hunan Province, Changsha 410114, China;International Research Center of Water Science & Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China,School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China,School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China; Key Laboratory of Water Sediment Sciencesand Water Disaster Prevention of Hunan Province, Changsha 410114, China;International Research Center of Water Science & Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China,School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China; Key Laboratory of Water Sediment Sciencesand Water Disaster Prevention of Hunan Province, Changsha 410114, China;International Research Center of Water Science & Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China and School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China; Key Laboratory of Water Sediment Sciencesand Water Disaster Prevention of Hunan Province, Changsha 410114, China;International Research Center of Water Science & Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China |
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| Abstract: | Based on the nonhydrostatic model NHWAVE, wave attenuation efficiency of non-submerged rigid vegetation subjected to regular and irregular waves was numerically investigated by designing different computational conditions. The computational reliability of NHWAVE in predicting wave attenuation of non-submerged rigid vegetation was well validated by comparing its predictions with the corresponding measurements. The effects of prominent factors, such as wave height, wave period, and water depth, on the wave attenuation efficiency of non-submerged rigid vegetation were also numerically investigated. The findings of this study could enhance understanding on the wave attenuation of non -submerged rigid vegetation under both regular and irregular waves. The results show that the wave attenuation is greatly influenced by wave height and period, and the water depth has little influence on the wave attenuation. Due to the influence of wave nonlinearity, the theory based on linear wave theory has smaller impact on wave attenuation. |
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| Keywords: | NHWAVE bulk drag coefficient wave attenuation regular wave irregular wave rigid vegetation |
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