De Cuyper, Anaïs
Promotor(s) : Dewals, Benjamin ; Erpicum, Sébastien
Date of defense : 2015 • Permalink : http://hdl.handle.net/2268.2/2367
Details
Title : | Hydrodynamic instabilities in shallow reservoirs |
Author : | De Cuyper, Anaïs |
Date of defense : | 2015 |
Advisor(s) : | Dewals, Benjamin
Erpicum, Sébastien |
Committee's member(s) : | Pirotton, Michel
Andrianne, Thomas |
Language : | English |
Number of pages : | 85 |
Discipline(s) : | Engineering, computing & technology > Civil engineering |
Institution(s) : | Université de Liège, Liège, Belgique |
Degree: | Master en ingénieur civil des constructions, à finalité |
Faculty: | Master thesis of the Faculté des Sciences appliquées |
Abstract
[fr] This Master's thesis is devoted to the study of ?ows in shallow reservoirs. The main
purpose is to enhance the knowledge of the di?erent ?ow regimes in order to improve the
prediction of deposits and thus the reservoir management. To do this, two points are covered
in this thesis: the in?uence of geometric parameters (length and width of the reservoir) on
main characteristics of meandering ?ows and the applicability of thermodynamic principles
to predict the ?ow regime in reservoirs. Concerning the ?rst point, three experiments were
performed in a shallow horizontal ?ume, the ?rst experiment being used to validate the
experimental protocol. For each experiment, the surface velocity ?elds were measured by
Large-Scale Particle Image Velocimetry (LSPIV) and the main characteristics of measured
meandering ?ows such as the characteristic lengths or the Strouhal number were obtained
using a Proper Orthogonal Decomposition (POD). Finally, it was shown that for a given
?ow regime, the characteristics of the ?ow do not depend on the geometry but only on
the shallowness of the reservoir. In the second part, two analytical models were developed
to model symmetric and asymmetric ?ows. Mass and momentum balance equations were
established and the power developed by the shear force was determined for each model and
compared. Based on this comparison, it was shown that the principle of maximum power
could be used to determine the ?ow regime in reservoirs.
Cite this master thesis
The University of Liège does not guarantee the scientific quality of these students' works or the accuracy of all the information they contain.