摘要
文章拓展了平面二维的植物消浪数学模型RIDE-VEG,模拟了随机波条件下的植物消浪作用,并考虑波浪破碎,数值结果与各水槽模型试验均吻合良好。模型比较了线性波拆分和均方根波高表征两种方法,发现这两种方法在率定植物拖曳力参数上存在较大区别。能谱分析显示,经过植物后,整个频域内的波能均有衰减,而衰减的幅度在谱峰频率处最大,且低频波大于高频波。考虑植物作用时,由于植物削弱了由于浅水变形引起的波高增大,导致波浪破波点更接近岸线。
The 2D numerical model RIDE-VEG was improved to simulate the vegetation-induced wave damp- ing under random wave condition, and the influences of the vegetation on wave breaking were further studied. The numerical results are in good agreement with several flume experiments. The energy spectrum analysis indicates that the wave energies over the whole frequency domain decay after passing through the vegetation region. The mag- nitude of the attenuation peaks at the maximum frequency, and is larger in low-frequency region than that in high- frequency region. The breaking point is closer to the coastline when considering the effects of the vegetation, which is attributed to the damping effects of the vegetation on the wave deformation in shallow water.
出处
《水道港口》
2016年第6期584-588,共5页
Journal of Waterway and Harbor
关键词
随机波
植物消浪
波浪破碎
海岸防护
random wave
vegetation-induced wave damping
wave breaking
coast protection
