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Books > Earth & environment > Earth sciences > Geology & the lithosphere > Soil science, sedimentology
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The Use of Delft3D to Simulate the Deposition of Cohesive and Non-Cohesive Sediments in Irrigation Systems (Paperback)
Loot Price: R2,309
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The Use of Delft3D to Simulate the Deposition of Cohesive and Non-Cohesive Sediments in Irrigation Systems (Paperback)
Series: IHE Delft PhD Thesis Series
Expected to ship within 12 - 19 working days
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Sediment deposition threatens the performance of many irrigation
systems. Because of the high impact on irrigation performance and
crop production, many studies have been done on how to deal with
sediment deposition. In this research, the Delft3D model,
originally developed for hydro-morphologic modeling of rivers and
estuaries, was adapted for the use in irrigation systems
simulations and applied to different case studies. This research
addresses two shortcomings of previous studies of sediments in
irrigation systems. Firstly, while previous studies primarily used
1D models, this research uses a 2D/3D model. The use of 2D/3D
models in irrigation systems is significant because the non-uniform
flow around structures such as offtakes, weirs and gates, leads to
asymmetric sedimentation patterns that are missed by 1D
simulations. Secondly, whereas previous studies mostly considered
non-cohesive sediments, this research simulates cohesive,
non-cohesive and a mix of both sediment types. This is important
for irrigation systems that draw water from natural rivers that
carry a mix of cohesive and non-cohesive sediments. The findings of
this research are important for irrigation system maintenance and
gate operation. It is also essential for the development of canal
operating plans that meet crop water requirements and at the same
time minimizes sediment deposition by alternating gates.
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