Abstract
A nondimensional parameter governing fluid-solid mixture flow is obtained from the comparison between inertia and intergranular-stress terms in the momentum equations. Using the nondimensional parameter, a nondimensional distance from the bed is introduced for investigating velocity profiles of these flows. The flow structure of granular and inertial sublayers is found near the bed. The former sublayer has a linear velocity profile due to the major role of intergranular stresses, while the latter sublayer has a logarithmic velocity profile due to the inertial forces. The flow model considering these sublayers is proposed and predicts the linear and logarithmic profiles theoretically. Surface velocity and average velocity are determined from the theoretical velocity profiles and compared with the experimental data.
| Original language | English |
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| Pages | 464-473 |
| Number of pages | 10 |
| Publication status | Published - Jan 1 1997 |
| Event | Proceedings of the 1997 1st International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment - San Francisco, CA, USA Duration: Aug 7 1997 → Aug 9 1997 |
Other
| Other | Proceedings of the 1997 1st International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment |
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| City | San Francisco, CA, USA |
| Period | 8/7/97 → 8/9/97 |
All Science Journal Classification (ASJC) codes
- Water Science and Technology
- Geotechnical Engineering and Engineering Geology
- Earth-Surface Processes