Hydraulic resistance of vegetated channels
Vegetation of river and canal channels can have serious consequences of a hydraulic nature. For example, vegetation of canals protects the bed and side slopes of canals from erosion, increases the non-eroding velocities in the canal, and can serve as a cheap method of stabilizing the slopes of hydraulic structures. On the other hand, vegetation can reduce the channel capacity. As a result, a prediction of changes in the hydraulic elements of flows in connection with the degree of vegetation of its channel is necessary for improving methods of hydraulic calculations of vegetated canals. This article reports on experimental investigations on two hydraulic flumes in which artificial methods and naturally grown wheat were utilized to simulate the vegetation. An analytic method is presented to calculate the flow resistance, and the results are compared to the experimental data with excellent agreement.
- OSTI ID:
- 379334
- Journal Information:
- Hydrotechnical Construction, Vol. 28, Issue 8; Other Information: PBD: Feb 1995; TN: Translated from Gidrotekhnicheskoe Stroitel`stvo; No. 8, 16-19(Aug 1994)
- Country of Publication:
- United States
- Language:
- English
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