Abstract
This study developed a one-dimensional numerical model for the simulation of unsteady flow and the resultant soil erosion in irrigation furrows. The model solves a modified version of the Saint-Venant equations that consider the loss of mass and momentum attributable to infiltration and sediment transport. The transport rate of fine sediment was predicted with a modified Laursen formula that treats the tractive shear stress as a function of both Reynolds number and the particle size. The modified Laursen formula was verified by using the erosion data measured in the field and in a laboratory flume. The model accurately predicted flow advance times and outflow hydrographs in comparison with data measured in irrigation furrows at Kimberly, Idaho. Sediment discharge predictions were less accurate.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 294-303 |
| Number of pages | 10 |
| Journal | Journal of Irrigation and Drainage Engineering |
| Volume | 138 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 26 2012 |
Keywords
- Infiltration
- Irrigation furrows
- Sediment transport
- Unsteady flow
ASJC Scopus subject areas
- Civil and Structural Engineering
- Water Science and Technology
- Agricultural and Biological Sciences (miscellaneous)
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