非淹没挺水植被水流特性试验研究  

Experimental Study on Water Flow Characteristics with Unsubmerged Rigid Aquatic Vegetation

作　　者：景何仿[1] 张凯 杨程[1] 董建强 

机构地区：[1]北方民族大学数值计算与工程应用研究所,宁夏银川750021 [2]北方民族大学数学与信息科学学院,宁夏银川750021

出　　处：《水力发电》2017年第12期105-108,共4页Water Power

基　　金：国家自然科学基金项目(11361002;11761005);天津大学水利工程仿真与安全重点实验室开放基金项目(HESS-1718);北方民族大学校级重点科研项目(2017KJ39)

摘　　要：为了研究含水生植物的水流特性,在实验室水槽中,进行了系列实验,利用玻璃棒代替水生挺水植被。玻璃棒的直径为6 mm,根据植被疏密程度和排列方式不同设置4种不同工况,利用三维激光多普勒测速仪(laser Doppler velometer,LDV)及水位计等仪器测量了不同工况下的水位分布、流速分布等。根据实测结果对植被区水面坡降、水流流速等进行了计算、分析和讨论。通过研究发现,植被区水面坡降、流速大小与植被的排列方式、疏密程度有密切关系。In order to study the flow characteristics with aquatic vegetation, series of laboratory experiments in a flume have been done, in which, the plants are substituted by glass rods with diameter of 6 mm. Four typical cases are set according to the density and arrangement of glass rods. Three dimensional Laser Doppler Velometer （LDV） and water level gauge are used to measure the distributions of velocity and water level in four cases respectively. The water surface slope and water velocity in vegetation area are calculated and analyzed. It is found that the water surface slope and velocity in the vegetation area have deep relationship with the arrangement, density, and diameter of the vegetation.

关 键 词：水生植被 水流流速 LDV 水面坡降 

分 类 号：TV131.22[水利工程—水力学及河流动力学]