| VELOCITY PROFILES OF SEDIMENT-LADEN FLOW |
| |
| 作者单位： | WANG Xingkui and QIAN Ning (N. Chien) (Associate Professor，Department of Hydraulic Engineering，Tsinghua University，Beijing，100084，China; Late Professor，Department of Hydraulic Engineering，Tsinghua University，Beijing，100084，China) |
| |
| 摘 要： |
|
VELOCITY PROFILES OF SEDIMENT-LADEN FLOW |
| |
| Authors: | WANG Xingkui and QIAN Ning |
| |
| Abstract: | The time-average velocity profiles of the flows carrying natural sand particles and three kinds of plastic particles as suspension and neutrally buoyant load are measured and analyzed. The velocity profiles of the sediment-laden flow can approximately be divided into two regions - the near-bed region and the far-bed region. Main factors affecting the velocity profiles are viscosity, density gradient, grain shear stress and damping of turbulence due to particles. Based on these physical conceptions, a velocity profile model of sediment-laden flow is developed. It agrees well with the experimental data. The discrepancy is 1.57% for the plastic particle-laden flow and 3.67% for the natural sand-laden flow. In the far-bed region, von Karman constants are smaller than those of the clear water flow. |
| |
| Keywords: | Sediment-laden flow Velocity distribution |
| 本文献已被 CNKI 等数据库收录！ |
