Response of engineered channels to changes in upstream controls

Simplified 1D numerical simulations

Abstract (2018)

Authors

Meles Siele Rivers, Ports, Waterways and Dredging Engineering - CEG
A. Blom Rivers, Ports, Waterways and Dredging Engineering - CEG
Enrica Viparelli University of South Carolina
Research Group
Rivers, Ports, Waterways and Dredging Engineering (CEG) (TU Delft)
Transient response Equilibrium state
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Published Date

2018

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Hydraulic Engineering

Research Group

Rivers, Ports, Waterways and Dredging Engineering

Abstract

Engineered alluvial channels are dynamic systems and continuously adjust their bed slope (by aggradation and degradation) and bed surface texture in response to changes in the upstream controls i.e., the water discharge, the rate and calibre of the sediment supply (Mackin 1948, Blom et al. 2016, 2017a). These adjustment processes (the transient phase) proceed until a new equilibrium state is reached. The equilibrium state can be disturbed, for instance, by natural changes or measures such as river training, repeated sediment extraction and nourishment measures. The resulting changes in sediment transport capacity, sediment supply rate or caliber of load induces adjustment of equilibrium.