鉴于研究含植物水流的紊流特性对河流治理及湿地恢复的重要意义,在大结构混凝土水槽中,以天然沉水植物狐尾藻和菹草为试验植物,利用三维超声波测速仪(ADV)测量含植物段水流,对5种工况下明渠紊流特性进行了研究。结果表明,含沉水植物水流时均流速垂线分布呈C形;植物密度较高时,紊动强度值相对较大且不同种类的植物对其影响趋于一致,低密度时紊动强度值相对较小,但垂线分布之间差异较为明显;植物密度越大脉动流速均方根值越大,同时紊流表现出明显的各向异性;雷诺切应力受种植密度及植物种类共同影响。 In view of the importance of studying turbulence characteristics of plant flow on river management and wetland restoration, natural submerged plants, foxtail millet and weed, were used as experimental plants in large concrete tanks. Three-dimensional ultrasonic anemometer (ADV) Including plant segment water flow, and studied the turbulent characteristics of open channel under five conditions. The results showed that the vertical distribution of flow velocity in submerged macrophytes was C-shaped. The turbulent intensity was relatively high and the influence of different plant species was consistent when the plant density was high. The turbulence intensity But the difference between the vertical distribution is more obvious. The bigger plant density is, the larger the root mean square value of pulsation velocity is, and the turbulent flow shows obvious anisotropy. The Reynolds shear stress is affected by planting density and plant species.