Abstract
An understanding of flow resistance due to gravel bed is the most basic knowledge required by hydraulic engineers for determining stage and discharge characteristics of river courses. In the present study, a laboratory experiment has been carried out in order to investigate the flow resistance law for a straight gravel-bed open-channel with different bed slopes and flow rates. It turns out that roughness length scale (ks) is dependent on the bed slope (S0) and increases as S0increase. The profiles of mean streamwise velocity agree well with the common distribution law. The effects of bed slopes and relative submergence on flow resistance were further analyzed.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 2nd International Postgraduate Conference on Infrastructure and Environment, IPCIE 2010 |
| Pages | 75-83 |
| Number of pages | 9 |
| Volume | 1 |
| Publication status | Published - 1 Dec 2010 |
| Event | 2nd International Postgraduate Conference on Infrastructure and Environment, IPCIE 2010 - Hong Kong, Hong Kong Duration: 1 Jun 2010 → 2 Jun 2010 |
Conference
| Conference | 2nd International Postgraduate Conference on Infrastructure and Environment, IPCIE 2010 |
|---|---|
| Country/Territory | Hong Kong |
| City | Hong Kong |
| Period | 1/06/10 → 2/06/10 |
Keywords
- Flow resistance
- Gravel bed
- Laboratory experiment
- Straight open channel
- Velocity profile
ASJC Scopus subject areas
- Building and Construction
- General Environmental Science