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You searched for +publisher:"Université Catholique de Louvain" +contributor:("Bousmar, Didier"). Showing records 1 – 2 of 2 total matches.

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Université Catholique de Louvain

1. Fraselle, Quentin. Solid transport in flooding rivers with deposition on the floodplains : experimental and numerical investigations.

Degree: 2010, Université Catholique de Louvain

Rivers present a threat on the neighbourhood, the houses and infrastructures when, following a major flood, they overflow their main channel and invade the floodplains. Consequent damage is often aggravated by muddy deposits, especially in urban areas. In this context of growing flood risk, due to climate changes, studies centred on compound channel flows and sedimentation processes have undergone increasing interest. Flow in compound channels is complex and present three-dimensional features which affect the transfer of suspended matter from the fast flowing main channel to the slower floodplain flow, separated by a strong shear layer. This dissertation aims at a better understanding of convection and diffusion phenomena and fine sediment deposit formation on floodplains during overbank flow. Transfer processes between the channel subsections due to turbulent exchanges are studied experimentally and numerically. Experimental mixing reference data was provided through solute injections in a laboratory flume and tracing of the plume. Lateral sediment transfer and subsequent deposition patterns are also investigated. Novel experiments were designed in a flume equipped with sediment-laden water recirculation and upstream sediment injection systems. Weighting of deposited sediment and digital imaging are used to evaluate the deposition formation. Numerical simulations show how the critical mobility parameter and the bed shear control the erosion fluxes. The spatial distribution lacks of realism due to the impossibility of the model to represent mobile deposition. However, modelled sediment deposition on the floodplains concurs with collected sediment mass during experiments, if the model parameters are correctly adapted to the floodplain surface conditions (micro-topography).

(FSA 3)  – UCL, 2010

Advisors/Committee Members: UCL - SST/IMMC/GCE - Civil and environmental engineering, Zech, Yves, Bousmar, Didier, Winckelmans, Grégoire, Deleersnijder, Eric, Verbanck, Michel, Paquier, André.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Fraselle, Q. (2010). Solid transport in flooding rivers with deposition on the floodplains : experimental and numerical investigations. (Thesis). Université Catholique de Louvain. Retrieved from http://hdl.handle.net/2078.1/68810

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Fraselle, Quentin. “Solid transport in flooding rivers with deposition on the floodplains : experimental and numerical investigations.” 2010. Thesis, Université Catholique de Louvain. Accessed June 25, 2019. http://hdl.handle.net/2078.1/68810.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Fraselle, Quentin. “Solid transport in flooding rivers with deposition on the floodplains : experimental and numerical investigations.” 2010. Web. 25 Jun 2019.

Vancouver:

Fraselle Q. Solid transport in flooding rivers with deposition on the floodplains : experimental and numerical investigations. [Internet] [Thesis]. Université Catholique de Louvain; 2010. [cited 2019 Jun 25]. Available from: http://hdl.handle.net/2078.1/68810.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Fraselle Q. Solid transport in flooding rivers with deposition on the floodplains : experimental and numerical investigations. [Thesis]. Université Catholique de Louvain; 2010. Available from: http://hdl.handle.net/2078.1/68810

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


Université Catholique de Louvain

2. Van Emelen, Sylvie. Breaching processes of river dikes : effects on sediment transport and bed morphology.

Degree: 2014, Université Catholique de Louvain

Flooding has always been an important concern because of material and human damages that can be caused. In the particular case of earthen embankments, the failure is usually characterised by the progressive formation of a breach, deepening by flow erosion and widening by sliding of its banks. The present thesis aims at analysing the ability of depth-averaged numerical models to simulate the complex process of breaching of a non-cohesive earthen embankment. The study starts with an experimental investigation on the erosion of a sand embankment. Then, three one-dimensional numerical models are developed and compared. They derive from different levels of assumptions: a classical Clear-Water Layer model, based on Saint-Venant – Exner equations, and two Mixture Layer models, assuming a variable flow density. These two latter models differ in their way of accounting for sediment transport mechanisms. The three models are compared with different test-cases, including the new dike erosion experiment. The thesis mainly focuses on two particular aspects: the influence of the sediment transport formulas, and the impact of a steep bed slope in the numerical approach. Finally, the full three-dimensional breaching problem is simulated using a two-dimensional shallow water model, with a bank failure operator to simulate the progressive widening of the breach. The numerical results are again compared with experimental data.

(FSA - Sciences de l)  – UCL, 2014

Advisors/Committee Members: UCL - SST/IMMC/GCE - Civil and environmental engineering, UCL - Ecole Polytechnique de Louvain, Zech, Yves, Soares-Frazão, Sandra, Bousmar, Didier, Verbanck, Michel, Hager, Willi, Papalexandris, Miltiadis, Jeanmart, Hervé.

Subjects/Keywords: Hydraulics; Breaching; Erosion; Shallow-water models

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Van Emelen, S. (2014). Breaching processes of river dikes : effects on sediment transport and bed morphology. (Thesis). Université Catholique de Louvain. Retrieved from http://hdl.handle.net/2078.1/151925

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Van Emelen, Sylvie. “Breaching processes of river dikes : effects on sediment transport and bed morphology.” 2014. Thesis, Université Catholique de Louvain. Accessed June 25, 2019. http://hdl.handle.net/2078.1/151925.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Van Emelen, Sylvie. “Breaching processes of river dikes : effects on sediment transport and bed morphology.” 2014. Web. 25 Jun 2019.

Vancouver:

Van Emelen S. Breaching processes of river dikes : effects on sediment transport and bed morphology. [Internet] [Thesis]. Université Catholique de Louvain; 2014. [cited 2019 Jun 25]. Available from: http://hdl.handle.net/2078.1/151925.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Van Emelen S. Breaching processes of river dikes : effects on sediment transport and bed morphology. [Thesis]. Université Catholique de Louvain; 2014. Available from: http://hdl.handle.net/2078.1/151925

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.