论文标题
评论M. Abdolahpour等人的“沿海檐篷中的波动电流”
Comment on "The wave-driven current in coastal canopies" by M. Abdolahpour et al
论文作者
论文摘要
在过去的十年中进行的实验室和现场测量表明，淹没植被檐篷中存在强波驱动的平均电流。 Luhar等。 （2010年）表明，这种平均电流类似于在裸床上的波边界层中产生的流流，并开发了一个简单的能量和动量平衡模型以预测其幅度。但是，该模型预测平均电流的大小不取决于冠层空间密度，这与Abdolahpour等人的测量值不一致。 （2017）在最近的实验室实验中。 Abdolahpour等人观察到波动驱动的平均流量最为明显的动机，Abdolahpour等人。 （2017年）提出了对其起源的另一种解释：它是由Canopy Drag产生的轨道运动中的垂直异质性驱动的。这种异质性会导致冠层界面附近的粒子轨道不完全，而拉格朗日平均电流类似于stokes在波传播方向上漂移。以这种物理洞察力和维度分析为指导的模型能够产生更准确的预测。该评论旨在调和这两个不同的模型，以供淹没的檐篷中的波动驱动平均流量。
Laboratory and field measurements made over the past decade have shown the presence of a strong wave-driven mean current in submerged vegetation canopies. Luhar et al. (2010) suggested that this mean current is analogous to the streaming flow generated in wave boundary layers over bare beds, and developed a simple energy and momentum balance model to predict its magnitude. However, this model predicts that the magnitude of the mean current does not depend on canopy spatial density, which is inconsistent with the measurements made by Abdolahpour et al. (2017) in recent laboratory experiments. Motivated by observations that the wave-driven mean flow is most pronounced at the canopy interface, Abdolahpour et al. (2017) proposed an alternate explanation for its origin: that it is driven by the vertical heterogeneity in orbital motion created by canopy drag. Such heterogeneity can give rise to incomplete particle orbits near the canopy interface and a Lagrangian mean current analogous to Stokes drift in the direction of wave propagation. A model guided by this physical insight and dimensional analysis is able to generate much more accurate predictions. This comment aims to reconcile these two different models for the wave-driven mean flow in submerged canopies.
