Open Channel Hydraulics And River Engineering

LEARNING OUTCOMES

Upon successful completion of the course the students will:

• Understand the peculiarities of flow in open channels and natural streams and will be able to classify flows (steady – unsteady, uniform – non-uniform, gradually – rapidly varying), understand the phenomenon of hydraulic jump and identify the curves of non-uniform gradually varying flow and the method of calculating the backwater curve, know the basic characteristics of sediment transport in rivers and the environmental impact of engineering works.
• Understand the role and function of basic hydraulic structures such as spillways, weirs and sluice gates.
• Be familiar with the legislation concerning river engineering works including channelization.
• Be able to do hydraulic calculations in simple cases of steady flow.
• Be able to use HEC-RAS (River Analysis System) software for river analysis studies.
• Be able to collaborate with their fellow students for undertaking relevant projects.

 

General Competences

• Project design and management
• Working independently
• Team work

 

SYLLABUS

1. Introduction – Subject. Basic equations of steady flow. Critical flow theory overview. Applications.
2. Uniform flow. Hydraulic design for uniform flow. Most efficient hydraulic cross section.
3. Non-uniform gradually varying flow. Classification of curves. Qualitative analysis, control sections. Backwater curve. Quantitative analysis- estimation of free surface in artificial and natural channels.
4. Hydraulic jump. Properties and jump control. Energy destruction. Stilling basins and weir with free overflow.
5. Rapidly varying flow. Thin-plate and broad-crested weirs. Side weirs. Dam spillways. Stepped spillways. Sluice gates.
6. Unsteady Flow: Gradually varying flow. St. Venant equations. Kinematic wave. Rapidly varying flow. Flood routing. Hydrological methods (Muskingum).
7. Sediment transport: Initiation of sediment motion, riverbed formations, bedload and suspended load. Measurement methods – estimation.
8. River channelization. Bridge scour. The HEC-RAS (River Analysis System) code. Presentation and applications.
9. River engineering works: legislation and applications.

 

STUDENT PERFORMANCE EVALUATION

Theory
• Final exam, 70%
• Practical exercises, 30%

 

ATTACHED BIBLIOGRAPHY

1. HYDRAULICS, Daugerty – Franzini. Publisher Fountas
2. Elements of Physical Hydrology, G. Hornberger et al., Translated in Greek by S.H. Karalis, Publisher DISIGMA, 2019.

Related academic journals:
1. Journal of Hydraulic Engineering, American Society of Civil Engineers
2. Water Science and Technology, IWA Publishing
3. HYDROTECHNICA, Journal of the Hellenic Hydrotechnical Association.