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I. Course content
The purpose of the course is to introduce fluvial processes that are important for training qualified personnel, to strengthen the acquired theoretical and practical knowledge and to teach them how to apply it in practice.
The task of the course is to teach students about the physical parameters of flow and sediment, to predict the shape of the bed in streams, to calculate the change in flow resistance, to teach students about the continuity of fluid transport, and the methods of calculating stable alluvial channels.
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II. The main theoretical part (lectures)
II.I. The course includes the following topics:
Subject of the course "Fluvial dynamics".
The main factors determining the processes in riverbed. Meandering.
Determining the main parameters of liquid flow in rivers.
Bernoulli's equation. Calculation of flow levels and depths in the river using the correct step and standard step methods.
Sediment properties
Velocity distribution and flow resistance laws in natural channels. Average flow velocity. Vertical distribution of the velocity. Resistance to flow.
Bedform classification and geometry. Methods to determine riverbed resistance. Bedform prediction.
Incipient motion
General information about dimensional analysis. Incipient motion. Beginning of the bedload sediment particles. Shields diagram
Bedload transport
Meyer-Peter Muller, Einstein-Brown methods of determining the bedload discharge. Calculation of the bedload discharge by fractions. Velocity of bedload particles. Bedload measurement.
Suspended load transport
Determining the discharge of suspended sediments. Sediment concentration. The advection-diffusion equation. Concentration profiles of suspended sediments. Hyperconcentrations. Rheology of hyperconcentrations. Measurement of suspended sediments.
Total load
Sediment transport capacity. Engelund-Hansen, Ackers White methods of determining total load transport. Brownlie, Yang, Einstein methods of determining total load transport
Design Criteria for Irrigation Canals
Methods of hydraulic calculation of the design of open earthen channels Regime method, tractive force method, method of permissible velocities, rational method.
Numerical modeling methods of fluvial processes
Existing numerical modeling methods. Sediment transport modeling with HEC-RAS program.
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