非淹没刚性植物对规则波传播变形影响实验研究

发布时间：2018-03-09 15:09

  本文选题：非淹没刚性植物　切入点：规则波　出处：《海洋通报》2017年02期 　论文类型：期刊论文

【摘要】：在海岸带种植红树林等水生植物可以有效的减小波浪对岸滩的破坏,系统全面地研究植物对波浪传播变形的影响是非常必要的。基于波浪水槽实验,探讨了规则波通过非淹没刚性植物波高的沿程变化,分析了水深、入射波高、植物模型密度及分布方式对反射系数、透射系数与波浪衰减系数的影响,同时与孤立波实验数据进行对比。实验结果表明,随着水深的增加,规则波的透射系数增加、反射系数和波能衰减系数减小;随着入射波高的增加,规则波的透射系数减小,反射系数和波能衰减系数增加。在分布方式相同的情况下,植物模型分布密度增加,规则波的反射系数和波能衰减系数增加,透射系数减小。在规则波入射方向上模型布置越紧密,规则波反射系数和波能衰减系数越大,透射系数越小。分析讨论了植物模型对规则波和孤立波的影响,在入射波要素相同的情况下,孤立波和规则波的能量衰减在50%左右,说明植物模型具有良好的消波作用。
[Abstract]:Planting mangroves and other aquatic plants in the coastal zone can effectively reduce the wave damage to the shoreline. It is necessary to systematically and comprehensively study the effects of plants on the wave propagation and deformation. The variation of regular wave through the wave height of non-submerged rigid plant is discussed. The effects of water depth, incident wave height, plant model density and distribution mode on reflection coefficient, transmission coefficient and wave attenuation coefficient are analyzed. The experimental results show that with the increase of water depth, the transmission coefficient of regular wave increases, the reflection coefficient and attenuation coefficient of wave energy decrease, and the transmission coefficient of regular wave decreases with the increase of incident wave height. Under the same distribution pattern, the distribution density of plant model increases, and the reflection coefficient and attenuation coefficient of regular wave increase. The closer the model is arranged in the incident direction of regular wave, the larger the reflection coefficient and attenuation coefficient of regular wave are, and the smaller the transmission coefficient is. The influence of plant model on regular wave and solitary wave is analyzed and discussed. The energy attenuation of solitary wave and regular wave is about 50% when the incident wave elements are the same, indicating that the plant model has good wave dissipation effect.
【作者单位】： 长沙理工大学水利工程学院;湖南省水沙科学与水灾害防治重点实验室;
【基金】：国家自然科学基金重点项目(51239001);国家自然科学基金(51409022) 湖南省教育厅资助科研项目(13B130) 水利部水科学与水工程重点实验室开放研究基金(YK914013)
【分类号】：Q948;P731.22
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本文编号：1589060