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Using genetic programming to determine Chèzy resistance coefficient in corrugated channels
genetic programming Chèzy resistance coefficient corrugated channels
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2009/12/4
Genetic Programming has been used to determine Chèzy resistance coefficient for full circular corrugated channels. Three corrugated plastic pipes have been experimentally studied in order to generate ...
Quantitative analysis of randomness exhibited by river channels using chaos game technique:Mississippi,Amazon,Sava and Danube case studies
Quantitative analysis river channels chaos game technique
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2009/10/30
This paper presents a numerical evaluation of the randomness which can be observed in the geometry of major river channels. The method used is based upon that of generating a Sierpinski triangle via t...
A Sediment Transport Model for Straight Alluvial Channels
Sediment Transport Model Straight Alluvial Channels
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2009/10/29
The paper presents a simple mathematical model for sediment transport in
straight alluvial channels. The model, which is based on physical ideas related to
those introduced by Bagnold (1954), was or...
An objective method of determining the constants of the Muskingum type linear
equation is described. In situations where the relationship between storage and
the weighted flow is nonlinear, an appro...
Lateral Mixing in Channels due to Secondary Currents
Lateral Mixing Channels Secondary Currents
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2009/10/27
Different mechanisms generating secondary currents in channels are presented.
It is shown by an order-of-magnitude analysis that secondary currents
of magnitude 1 % of the downstream velocity are as...
Naturalization of Drainage Channels in Lithuania and Possibilities of Their Maintenance as Water Recipients
Naturalization Drainage Channels Maintenance Water Recipients
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2009/10/22
In the process of high expansion of drainage systems and land cultivation, most
natural watercourses in Lithuania were converted into drainage channels. They
were deprived of all natural riparian ve...
The hydraulic exponents which appear in the regime theory equations are predicted using different methods such as an empirical function, extremal energy slope, or extremal stream power. These hydrauli...
Longitudinal dispersion in natural channels: 3. An aggregated dead zone model applied to the River Severn, U.K.
Channels ispersion dead zones tracers
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2009/3/24
An Aggregated Dead Zone (ADZ) model is presented for longitudinal dispersion of tracer in river channels, in which the channel cross-section is divided into two parallel regions: the bulk flow and dea...
Longitudinal dispersion in natural channels: 2. The roles of shear flow dispersion and dead zones in the River Severn, U.K.
Channels dispersion dead zones tracers River Severn
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2009/3/24
The classical one-dimensional advection-diffusion equation (ADE) gives an inadequate description of tracer cloud evolution in the River Severn, U.K. A solute transport model incorporating the effects ...
Longitudinal dispersion in natural channels: l. Experimental results from the River Severn, U.K.
Channels dispersion tracers River Severn
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2009/3/24
A tracer experiment using Rhodamine WT dye was carried out to measure longitudinal dispersion in a 14-km reach of the River Severn in Wales, U.K. The river’s discharge was measured at six points and t...