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G11. HYDRAULIC MODELLING
(KUL-code: HF40 (Th); HF41 (Pr))
Lecturer: DELLEUR J. / BERLAMONT J.
ECTS-credit: 5 pts
Contact hours: 30 hrs. of theory/30 hrs. of practical
Prerequisites: Mathematics for water engineering (C2), Hydraulics (C5)
Course syllabus: Lecture notes
Part 1 (Delleur J.)
Time and place: 1st semester, 8 sessions of 3 hours each, VUB
Evaluation: One closed book examination on theory, one open book examination on problems, four
reports on computer-based exercises.
Comparable books: Sturm, T.W. “Open Channel Hydraulics”, Mc Graw-Hill, 2001. Particularly chapter 7
on Governing Equations of Unsteady Flow, Chapter 8 on Numerical Solution of the
Unsteady Flow Equations and Chapter 9 on Simplified Methods of Flow Routing.
Jain, S.C. “Open Channel Flow”, John Wiley and Sons, 2000. Presents clear and
complete derivations of the basic equations and their solution.
Learning objectives: Due to the variability of rainfall, most natural flows are time dependent. It is therefore
important to grasp the analysis of unsteady flows. The objectives of the course are thus to understand the
equations governing unsteady free surface flows, to comprehend the available methods of solution and to
acquire some familiarity with a few of the professional softwares available for the solution of unsteady free
surface flow problems.
Course description:
The course starts with the derivation of the hyperbolic partial differential equations of unsteady free surface
flow (St. Venant Equations). Their theoretical solution by the method of characteristics is examined next. It is
demonstrated by a computer exercise based on the Pin-Nam Lin method (Ven Te Chow).
Then numerical solutions are considered: The first is the method of specified intervals, based on the
characteristic equations. It is illustrated by a computer exercise. Following this, are the explicit and implicit
formulations of the finite difference forms, of the St. Venant equations. These are illustrated in the model
FLDWAV (unsteady flow in rivers). It is the most comprehensive software available for flood forecasting.
Then simplified methods, including the diffusion and the kinematic wave are considered. The software program
KINEROS illustrates the application of the kinematic wave to the modeling of overland flow and upland small
streams. It includes infiltration and erosion components. It can be used for both agricultural and urban
watersheds. An exercise is planned for the illustration of KINEROS. The combination of KINEROS for the
upland watersheds and FLDWAV for the main rivers provides the necessary tools for complete hydraulic
modeling of surface waters.
Part 2 (Berlamont J.)
Time and place: 1st semester, 7 sessions of 3 hours each, K.U.L.
Evaluation: Quotation on sample problems
Comparable books: Butler D. & Davies J.W. (2000), “Urban drainage”, Spon, London
Berlamont J. (1997), “Rioleringen” (in Dutch), Acco, Leuven
Learning objectives:
The students should be able to design water supply systems and waste-water collection systems using modern
commercial software packages (e.g. “Hydroworks” for sewer networks). They should be able to critically
evaluate the numerical results.
Advanced studies in Water Resources Engineering / 41