User menu

Accès à distance ? S'identifier sur le proxy UCLouvain

Steady-flow experiments in urban areas and anisotropic porosity model

Primary tabs

download
  • Open access
  • PDF
  • 2.28 M
Velickovic, Mirjana Zech, Yves [UCL] Soares Frazao, Sandra [UCL]

Modelling flow through an urban area is challenging because of the significant difference between the scale of individual streets and the whole district scale. This paper presents idealized experiments where buildings are represented by square blocks. The experiments were designed to highlight the effect of the street width and orientation to the main flow direction. In addition, a porosity model is developed for representing the urban district as a whole without considering the detailed geometry of the streets, but accounting for the main effects on the flow. The model introduces a tensor of drag coefficients aimed at representing directional effects. The drag coefficients are calibrated and validated using the experimental results. © 2016 International Association for Hydro-Environment Engineering and Research.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès libre
Publication date 2017
Language Anglais
Journal information "Journal of Hydraulic Research" - Vol. 55, no.1, p. 85-100 (2017)
Peer reviewed yes
Publisher Taylor and Francis (London)
issn 0022-1686
e-issn 1814-2079
Publication status Publié
Affiliation UCL - SST/IMMC/GCE - Civil and environmental engineering
Keywords Drag coefficient ; Laboratory experiment ; Porosity model ; Shallow-water ; Two-dimensional model ; Urban flood modelling
Links
  1. Bachmat Yehuda, Bear Jacob, Macroscopic modelling of transport phenomena in porous media. 1: The continuum approach, 10.1007/bf00238181
  2. Bates Paul D., Development and testing of a subgrid-scale model for moving-boundary hydrodynamic problems in shallow water, 10.1002/1099-1085(20000815/30)14:11/12<2073::aid-hyp55>3.0.co;2-x
  3. Bear J., Dynamics of fluids in Porous materials (1972)
  4. Cea L., International Journal for Numerical Methods in Fluids, 63, 903 (2010)
  5. Defina Andrea, Two-dimensional shallow flow equations for partially dry areas, 10.1029/2000wr900167
  6. Defina A., Proceedings of the specialty conference on modelling of flood propagation over initially dry areas, 72 (1994)
  7. Finaud-Guyot P., International Journal for Numerical Methods in Fluids, 62, 1299 (2010)
  8. Gallegos Humberto A., Schubert Jochen E., Sanders Brett F., Two-dimensional, high-resolution modeling of urban dam-break flooding: A case study of Baldwin Hills, California, 10.1016/j.advwatres.2009.05.008
  9. Guinot Vincent, Multiple porosity shallow water models for macroscopic modelling of urban floods, 10.1016/j.advwatres.2011.11.002
  10. Guinot Vincent, Soares-Frazão Sandra, Flux and source term discretization in two-dimensional shallow water models with porosity on unstructured grids, 10.1002/fld.1059
  11. Ishigaki T, Nakagawa H, Baba Y, Hydraulic model test and calculation of flood in urban area with underground space, Environmental Hydraulics and Sustainable Water Management, Two Volume Set (2004) ISBN:9780415365468 p.1411-1416, 10.1201/b16814-232
  12. Kim Byunghyun, Sanders Brett F., Famiglietti James S., Guinot Vincent, Urban flood modeling with porous shallow-water equations: A case study of model errors in the presence of anisotropic porosity, 10.1016/j.jhydrol.2015.01.059
  13. Lhomme Julien, Soares-Frazão Sandra, Guinot Vincent, Zech Yves, Modélisation à grande échelle des inondations urbaines et modèle 2D à porosité, 10.1051/lhb:2007054
  14. Liang Dongfang, Falconer Roger A., Lin Binliang, Coupling surface and subsurface flows in a depth averaged flood wave model, 10.1016/j.jhydrol.2007.01.045
  15. Mason David C., Horritt Matthew S., Hunter Neil M., Bates Paul D., Use of fused airborne scanning laser altimetry and digital map data for urban flood modelling, 10.1002/hyp.6343
  16. McMillan Hilary K., Brasington James, Reduced complexity strategies for modelling urban floodplain inundation, 10.1016/j.geomorph.2006.10.031
  17. Sanders Brett F., Schubert Jochen E., Gallegos Humberto A., Integral formulation of shallow-water equations with anisotropic porosity for urban flood modeling, 10.1016/j.jhydrol.2008.08.009
  18. Schubert Jochen E., Sanders Brett F., Smith Martin J., Wright Nigel G., Unstructured mesh generation and landcover-based resistance for hydrodynamic modeling of urban flooding, 10.1016/j.advwatres.2008.07.012
  19. Soares-Frazão Sandra, Lhomme Julien, Guinot Vincent, Zech Yves, Two-dimensional shallow-water model with porosity for urban flood modelling, 10.1080/00221686.2008.9521842
  20. Soares-Frazão Sandra, Zech Yves, Dam-break flow through an idealised city, 10.3826/jhr.2008.3164
  21. Soares-Fraz√£o S, Deswijsen J, Duthoit A, Zech Y, Spinewine B, Dam-break flow experiments in simplified city layouts, River Flow 2006 (2006) ISBN:9780415408158, 10.1201/9781439833865.ch53
  22. Testa Guido, Zuccalà David, Alcrudo Francisco, Mulet Jontan, Soares-Frazão Sandra, Flash flood flow experiment in a simplified urban district, 10.1080/00221686.2007.9521831
Bibliographic reference Velickovic, Mirjana ; Zech, Yves ; Soares Frazao, Sandra. Steady-flow experiments in urban areas and anisotropic porosity model. In: Journal of Hydraulic Research, Vol. 55, no.1, p. 85-100 (2017)
Permanent URL http://hdl.handle.net/2078.1/183139