含植物河道紊流结构研究

摘要

The growth of aquatic plants changes the turbulent structure of river course in the natural rivers.Water body of river course containing with plants mixed intensely in ordinary open-channel turbulent with complex structure,the structure of turbulent affected directly transmission of the river sediment and nutrients,therefore,it is necessary to strength the research of turbulent structure of river course mixed with plants.By analyzing the mean velocity of vegetated channel turbulent,the turbulence characteristics and coherent structure characteristics,this paper supplies suggestions to solve the problems of soil and water erosion and ecology of river course.%自然河流中,水生植物的生长使河道中的紊流结构产生了改变.普通明渠紊流中,含植物河道水体掺混剧烈,结构复杂,由于紊流结构对河流泥沙、营养物等的输送转移造成直接影响,因此,加大对含植物河道紊流结构的研究力度十分必要.文章通过分析含植物河道紊流平均流速、紊动特性和拟序结构特点,对其进行深入研究,并适当给出建议,以期解决水土流失和河道生态问题.