| 沿程非均匀分布植物区对海啸波消减的数值研究 |
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| 引用本文： | 蒋昌波,徐进,邓斌,陈杰,屈科.沿程非均匀分布植物区对海啸波消减的数值研究[J].海洋工程,2020,38(3):1-11. |
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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;洞庭湖水环境治理与生态修复湖南省重点实验室, 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）；国家自然科学基金项目（51809021）；湖南省自然科学基金项目（2018JJ3546） |
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| 摘 要： | 为研究近岸植物的非均匀分布对海啸波的消减作用,采用非静压单相流模型计算了5种不同密度分布植物与孤立波的相互作用,分析不同密度分布植物对海啸的消波特性。结果表明在植物总株数相同时,具有不同分布密度植物的消波效果相近,透射波波高差小于3%、最大流速差小于5.4%,但是不同植物密度分布情况下植物区前的反射系数有所不同,反射系数最大差为80.2%。此外,所有分布的植物区对波高和流速的透射系数随着波高和植物区长度变化的趋势是一样的,在不同入射波高和植物区长度情况下5种分布均呈现出相似的沿程衰减机制。
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| 关 键 词： | 非均匀刚性植物 孤立波 非静压模型 植物消波 |
| 收稿时间： | 2019/11/13 0:00:00 |
Numerical investigation of tsunami waves attenuation through non-uniform vegetation |
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| JIANG Changbo,XU Jin,DENG Bin,CHEN Jie,QU Ke.Numerical investigation of tsunami waves attenuation through non-uniform vegetation[J].Ocean Engineering,2020,38(3):1-11. |
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| Authors: | JIANG Changbo XU Jin DENG Bin CHEN Jie QU Ke |
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| Institution: | School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China;Key Laboratory of Water Sediment Sciences and Water Disaster Prevention of Hunan Province, Changsha 410114, China;Engineering and Technical Center of Hunan Provincial Environmental Protection for River-Lake Dredging Pollution Control, Changsha 410114, China |
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| Abstract: | To study wave attenuation efficiency of non-uniform distributed nearshore vegetation on tsunami waves, a non-hydrostatic numerical model was adopted to simulate the interaction between solitary wave and vegetation with five different density distributions. The simulation results show that given the same total number of vegetation, wave attenuation efficiency of vegetation in different density arrangements was similar. The difference of transmission wave height was less than 3%. The difference of maximum velocity was less than 5.4%. However, the reflection coefficient in the front of vegetation region under different distributions was different. The maximum difference of reflection coefficient was 80.2%. In addition, the attenuation tendency of wave height and velocity in all five distributions were nearly the same, as the wave height and vegetation region length increased. The attenuation efficiency along the vegetation region was similar in five different vegetation density distributions. |
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| Keywords: | non-uniform rigid vegetation solitary wave non-hydrostatic model wave attenuation |
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