閉鎖性水域における吹送流現象に及ぼす浮葉植物水面占有率の影響

Abstract

In this study, in order to examine a wind-induced mixing phenomenon in a closed water area with floating-leaved plant, we conducted experiments on wind flow characteristics, entrainment phenomenon and turbulent structure by using a test tank with wind tunnel and artificial plants. From the experimental results of wind flow characteristics, we quantified the impact of occupancy rate of plant on resistance characteristics. From the experimental results of entrainment phenomena, we defined the parameter that can explain a mixing magnitude between the density stratifications, and quantified the impact of the rate on vertical mixing. From the experimental results of turbulent structure of the upper layer, we clarified a difference of turbulent structure at each occupancy rate and quantified the impact of the rate on turbulent characteristics.