Microrelief-Controlled Overland Flow Generation: Laboratory and Field Experiments
نویسندگان
چکیده
منابع مشابه
Experiments on sediment deposition by overland flow
Experiments were conducted to evaluate the influence of sediment concentration, slope and discharge on sediment deposition rates and patterns associated with a reduction in bed slope. Analysis of the data shows that up to a certain unit discharge a simple settling equation without a transport term gives a good prediction of the sediment delivery ratio and the grain-size distribution of the depo...
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A laboratory catchment provides experimental control over hydrological variables which is notably absent in the monitoring of experimental and representative basins. In designing an apparatus for laboratory catchment studies, particular attention must be paid to the methods of simulating rainfall over, and of measuring discharge from, the artificial catchments. The former should reflect the imp...
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We are interested in simulating overland flow on agricultural fields during rainfall events. The model considered is the shallow water system (or Saint-Venant equations) without infiltration, complemented with a friction term. In this context, we definitely have to cope with dry/wet interfaces and water inflow on dry soil. We present a simplified one-dimensional model, discretized with a well-b...
متن کاملSimulation of Rain-Water Overland-Flow
Abstract. We are interested in simulating overland flow on agricultural fields during rainfall events. In this context, we definitely have to cope with dry/wet interfaces and water inflow on dry soil. The model considered is the Shallow Water system (or Saint-Venant equations) without infiltration. Moreover, the model has to be completed with friction terms. It is numerically solved by a finite...
متن کاملNumerical Aspects in Simulating Overland Flow Events
In this paper a comparative analysis of 2D numerical models for overland flow simulations have been performed; in particular they are based on the shallow water approach according to fully dynamic, diffusive and kinematic wave modeling. The systems have been numerically solved by using the MacCormack second order central scheme. The models have been tested, validated and compared using numerica...
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ژورنال
عنوان ژورنال: Applied and Environmental Soil Science
سال: 2015
ISSN: 1687-7667,1687-7675
DOI: 10.1155/2015/642952