Moodle web site for the course
Online tutorial
/
- Fundamentals in Hydrology
- Open-channel flows (steady flows)
- Weirs, and applications to spillways
Contribution of the course to the program objectives (N°)
AA1.1, AA1.2, AA1.3, AA2.1, AA5.2, AA5.3
Specific learning outcomes of the course
- Determine the design discharge for several types of civil engineering works
- Design irrigation channels
- Design urban sewers
- Calculate steady flow profiles in channels
- Describe and calculate the effects of local changes in the channel geometry on the flow (narrowing, widening, change in bed slope, presence of bridge piers)
- Design of spillways (normalized Creager profile)
Transversal learnning outcomes of the course :
- Create and use and Excel sheet to solve in a simple and efficient way problems in hydraulic engineering
- Summarize the acquired knowledge in order to present on the blackboard a clear and concise answer to a given question
Initiate a general questioning on the use of water resources
The contribution of this Teaching Unit to the development and command of the skills and learning outcomes of the programme(s) can be accessed at the end of this sheet, in the section entitled “Programmes/courses offering this Teaching Unit”.
Written test (25 % of the final mark) consisting in steady flow water profiles calculations using the Excel sheet
Oral exam (75 %) on the theoretical aspects, with a preparation on the blackboard
Lectures, practical exercises and laboratory, all in close link with each other
Numerous examples of applications and real cases where the methods developed in the course were applied
Use of didactic softwares and creation of Excel calculation sheets
- Introduction (1 h) : purpose of open-channel hydraulics
- Hydrology (7 h): rain, water cycle, measurement and analysis of discharges, rainfall-discharge relationships (unit hydrograph, rational method, Hauff-Vicari)
- Steady open-channel flows (15 h): channels, sewers and rivers. Steady uniform flow: Chezy and Manning equations, optimal trapezoidal section, compound and heterogeneous channels, normal depth calculation in channels and sewers. Gradually varied flows: specific energy, critical depth, critical slope, flow profiles (theory and practical calculations). Flow in natural rivers: pseudo-uniform flow. Rapidly varied flow: hydraulic jump, drawn jump. Flow in non-prismatic geometry: flow between a gate and a reservoir, change in bed slope, change in channel width, presence of bridge piers, Venturi flumes, bottom sill, broad crested weir.
- Weirs and spillways (5 h): Thin crested weir, normalized Creager profile, free or drawn outflow, spillways
Lecture notes
Books :
Chow, "Open-channel hydraulics"
Lencastre, "Hydraulique générale"
Students should know the Euler and Navier-Stokes equations, the Bernoulli equations, and the headlosses formulations according to Moody's diagram
