Open Channel Hydraulics, River Hydraulic Structures and Fluvial Geomorphology

2019 ◽  
pp. 109-145
Author(s):  
Monzur A. Imteaz

2014 ◽  
Vol 761 ◽  
Author(s):  
Thomas J. Bridges

AbstractA new theory for the emergence of dispersion in shallow water hydrodynamics in two horizontal space dimensions is presented. Starting with the key properties of uniform flow in open-channel hydraulics, it is shown that criticality is the key mechanism for generating dispersion. Modulation of the uniform flow then leads to model equations. The coefficients in the model equations are related precisely to the derivatives of the mass flux, momentum flux and mass density. The theory gives a new perspective – from the viewpoint of hydraulics – on how and why key shallow water models like the Korteweg–de Vries equation and Kadomtsev–Petviashvili equations arise in the theory of water waves.


2007 ◽  
Vol 7 (1) ◽  
pp. 121-129 ◽  
Author(s):  
N. Fonder ◽  
S. Xanthoulis

Romans are considered as the greatest aqueduct builders of the ancient world, though qanat systems were in use in ancient Persia, India, Egypt, and other Middle Eastern countries thousand of years earlier. Based on history documents and civil engineering studies, this paper summarizes hydrology and hydraulics engineering techniques developed by Roman Engineers. The study case is the Nîmes Aqueduct and its Pont du Gard bridge, the most intact aqueduct bridge remaining today. Despite the existence of superb ruins and conducts' frames, little is known of the hydraulic engineering of these Roman aqueducts and on their water supply and flow rates. This paper explains hydraulic structures and regulations used. It demonstrates the expertise of Roman Engineers on hydraulics of open channel flows.


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