Investigating Effect of Changing Vegetation Height with Irregular Layout on Reduction of Waves using Flow-۳D Numerical Model

In this study, the effect of changing vegetation heights with regular arrangement on wave reduction is investigated using numerical model Flow ۳D. For this purpose, a model of a channel with a specific dimension is simulated, and the three-layered arrangement of the layout Long-short, short-to-long, and zigzag layouts under four different waves, all of which are linear waveforms. The results obtained from wave height measurements at four different points along the canal indicate that the behavior of waves in dealing with different layers follows a steady pattern, and the change in vegetation geometry can greatly lead to Increase in damping waves.From this research, it can be concluded that in order to achieve maximum damping in vegetation with variable height, it is necessary that the maximum level of lateral obstruction is at the beginning of the cover, and in the face of maximum wave energy. His research by Cheng Wu and Daniel T. Cox (۲۰۱۵) shows that by managing the level of lateral inhibition by changing the density or changing the geometry of the coating, other parameters effective in damping the waves in plant coatings can be fixed. It greatly increased the damping.

Keywords:

green belt , geometric layout , Vegetation , irregular layout , regular layout