| Experiment on the Effect of Sediment Concentration on Flow Structure |
| |
| 作者姓名： | CHEN Li WU Menwu DENG Xiaoli HUANG Rongmin |
| |
| 作者单位： | State Key Lab.of Water Resources and Hydropower Eng.Sci.，Wuhan Univ.，Wuhan 430072，China |
| |
| 基金项目： | Supported by National Key Basic Research and Development Program(973 Program)(2003CB415205)
the National Natural Science Foundation of China and the Research Fund for the Doctoral Program of Higher Education of the Ministry of Education of China |
| |
| 摘 要： | The paper studies on the sediment-laden flow by using MicroADV.Laboratory calibration has been conducted to determine the relationship between backscattered signal strength and sediment concentration. Based on the experimental data,the interactions between sediment and fluid in open channel flow are investi- gated.The experiment shows that there exist inner relation between sediment concentration and turbulence, and the relationship is distinctry related to the diameter of particle as well as the flow concentration itself.With the same hydraulic condition,the relationship becomes evidently closer with the increasing sediment concentra- tion.The experiment also shows that with the increasing concentration,the presence of particles has a notice- ably impact both on the mean velocity and on the turbulence intensity,i.e.the flow turbulent intensity will be strongly attenuated and the vertical distribution of mean velocity will be changed greatly at all.
|
Experiment on the Effect of Sediment Concentration on Flow Structure |
| |
| CHEN Li WU Menwu DENG Xiaoli HUANG Rongmin.Experiment on the Effect of Sediment Concentration on Flow Structure[J].Journal of Sichuan University (Engineering Science Edition),2005(Z1). |
| |
| Authors: | CHEN Li WU Menwu DENG Xiaoli HUANG Rongmin |
| |
| Abstract: | The paper studies on the sediment-laden flow by using MicroADV.Laboratory calibration has been conducted to determine the relationship between backscattered signal strength and sediment concentration. Based on the experimental data,the interactions between sediment and fluid in open channel flow are investi- gated.The experiment shows that there exist inner relation between sediment concentration and turbulence, and the relationship is distinctry related to the diameter of particle as well as the flow co... |
| |
| Keywords: | turbulence intensity mean velocity sediment concentration flow structure |
| 本文献已被 CNKI 维普 等数据库收录！ |
