摘要
通过基于考虑波浪非线性频散关系的椭圆型缓坡方程数学模型(RIDE),在原高阶的控制方程中添加植物阻力项,建立了模拟植物区波浪传播的数学模型(RIDE-VEG)。将计算结果与规则波在植物场中变形的水槽试验数据进行比较,验证良好,并分析了植物区特征参数对于波浪传播的影响。针对相对淹没度、植物密度和波浪周期等因素对波高衰减的影响进行敏感性分析,结果表明其三者对于消浪效果的影响是单调的,但消浪效果对于波浪周期的敏感程度则较其余二者为弱。与其他学者的研究相比,忽略流场效应的RIDE-VEG模型较其它的模型计算更为简便,且计算结果较为满意。
Wetland vegetation plays an important role in coastal protection. In this paper, in order to calculate the wave transformation in the vegetation field, the extended elliptic type mild slope equation model, RIDE-VEG, is further developed to investigate regular wave damping by considering nonlinear dispersion relationship and adding the vegetation factor term. The numerical result is in good agreement with flume experiments, and it shows the same trend with other previous studies. A sensibility analysis is conducted to understand the impact of relative submergence degree, vegetation density and incident wave period on wave damping. It is found that the damping result affected by these three factors is all monotonic, while wave period affects the damping result more weakly than the other two factors. Compared with other scholars’ researches, numerical model RIDE-VEG without the consideration of flow field is more efficient in calculation and the calculated result is satisfactory.
出处
《海洋工程》
CSCD
北大核心
2014年第6期41-48,共8页
The Ocean Engineering
关键词
湿地植物
波浪衰减
缓坡方程
RIDE模型
敏感性分析
消浪效果
wetland vegetation
wave damping
the mild slope equation
RIDE model
sensibility analysis
damping result
