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Applicability of Sediment Transport Capacity Models for Nonsteady State Erosion from Steep Slopes
Publisher: American Society of Civil Engineers
Abstract: The physics-based sediment transport equations are derived from the assumption that the sediment transport rate can be determined by a dominant variable such as flow discharge, flow velocity, slope, shear stress, stream ...
Modeling Two-Dimensional Erosion Process over Infiltrating Surfaces
Publisher: American Society of Civil Engineers
Abstract: The physics-based modeling of the rainfall-runoff induced erosion process is accomplished. The existing one-dimensional erosion process equations are extended to two dimensions and kinematic wave approximation is used. The ...
Predicting Longitudinal Dispersion Coefficient in Natural Streams by Artificial Neural Network
Publisher: American Society of Civil Engineers
Abstract: An artificial neural network (ANN) model was developed to predict the longitudinal dispersion coefficient in natural streams and rivers. The hydraulic variables [flow discharge
ANN and Fuzzy Logic Models for Simulating Event-Based Rainfall-Runoff
Publisher: American Society of Civil Engineers
Abstract: This study presents the development of artificial neural network (ANN) and fuzzy logic (FL) models for predicting event-based rainfall runoff and tests these models against the kinematic wave approximation (KWA). A three-layer ...
Numerical Model for Sediment Transport over Nonplanar, Nonhomogeneous Surfaces
Publisher: American Society of Civil Engineers
Abstract: Sediment transport on surfaces with spatially variable microtopography, roughness, and infiltration was investigated using the diffusion wave equation. An implicit finite-difference scheme together with multivariate Newton’s ...
Kinematic Wave Theory for Transient Bed Sediment Waves in Alluvial Rivers
Publisher: American Society of Civil Engineers
Abstract: Transient bed sediment waves in alluvial rivers have been described using a multitude of hydraulic formulations. These formulations are based on some form of the St. Venant equations and conservation of mass of sediment ...
Simulating Transient Sediment Waves in Aggraded Alluvial Channels by Double-Decomposition Method
Publisher: American Society of Civil Engineers
Abstract: By using the double-decomposition (DD) method, this study simulates transient sediment waves caused by aggradation described by a diffusion-type partial differential equation (PDE). The DD method solves the PDE by decomposing ...
Spatially Averaged Conservation Equations for Interacting Rill‐Interrill Area Overland Flows
Publisher: American Society of Civil Engineers
Abstract: The modeling of flows at hillslope scale over land surfaces that contain rills and interrill areas is presented. The flow in rills is treated as one‐dimensional “channel flow.” The flow at interrill areas is treated as ...
Strength Prediction of High-Strength Concrete by Fuzzy Logic and Artificial Neural Networks
Publisher: American Society of Civil Engineers
Abstract: High-strength concretes (HSC) were prepared with five different binder contents, each of which had several silica fume (SF) ratios (0–15%). The compressive strength was determined at 3, 7, and 28 days, resulting in a total ...
Genetic Algorithm-Based Discharge Estimation at Sites Receiving Lateral Inflows
Publisher: American Society of Civil Engineers
Abstract: The genetic algorithm (GA) technique is applied to obtain optimal parameter values of the standard rating curve model (RCM) for predicting, in real time, event-based flow discharge hydrographs at sites receiving significant ...
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