华中科技大学学报：自然科学版2012，Vol.40Issue(2)：49-53,5.
弯道局部非淹没刚性植被水流特性研究
Flow characteristics in curved open channels with partial non-submerged rigid vegetation
摘要
Abstract
Flow characteristics in a 180°curved open channel with partial non-submerged rigid vegeta- tion was studied. Reinforcing steel bars were used to simulate the natural vegetation. The 3D Doppler ultrasound anemometer was adopted to measure the flow velocities both in the case of vegetation andnon-vegetation. 3D velocity and turbulent kinetic energy data were obtained and compared for both ca- ses. The results show that the existence of vegetation changes the velocity distribution profile and internal flow structures in curved reach. In addition, the depth-averaged model is used to simulate thevegetation flow based on the equivalent resistance coefficient method. The calculation results are in good agreement with the experimental data, which shows that the numerical format can effectively predict the flow characteristics in curved open channels.关键词
弯道/非淹没刚性植被/三维流速/紊动能/等效阻力系数法Key words
curved open channel/non-submerged rigid vegetation/3D velocity/turbulent kinetic en-ergy/equivalent resistance coefficient method分类
建筑与水利引用本文复制引用
李成光,槐文信,杨洪武..弯道局部非淹没刚性植被水流特性研究[J].华中科技大学学报：自然科学版,2012,40(2):49-53,5.基金项目
国家自然科学基金资助项目 （）
中央高校基本科研业务费专项资金资助项目（2104001）. （）
