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Calibration of a 1D/1D urban flood model using 1D/2D model results in the absence of field data

Authorized Users Only
2011
Authors
Leandro, J.
Đorđević, Slobodan
Chen, A. S.
Savić, D. A.
Stanić, Miloš
Article (Published version)
Metadata
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Abstract
Recently increased flood events have been prompting researchers to improve existing coupled flood-models such as one-dimensional (1D)/1D and 1D/two-dimensional (2D) models. While 1D/1D models simulate sewer and surface networks using a one-dimensional approach, 1D/2D models represent the surface network by a two-dimensional surface grid. However their application raises two issues to urban flood modellers: (1) stormwater systems planning/emergency or risk analysis demands for fast models, and the 1D/2D computational time is prohibitive, (2) and the recognized lack of field data (e. g. Hunter et al. (2008)) causes difficulties for the calibration/validation of 1D/1D models. In this paper we propose to overcome these issues by calibrating a 1D/1D model with the results of a 1D/2D model. The flood-inundation results show that: (1) 1D/2D results can be used to calibrate faster 1D/1D models, (2) the 1D/1D model is able to map the 1D/2D flood maximum extent well, and the flooding limits sati...sfactorily in each time-step, (3) the 1D/1D model major differences are the instantaneous flow propagation and overestimation of the flood-depths within surface-ponds, (4) the agreement in the volume surcharged by both models is a necessary condition for the 1D surface-network validation and (5) the agreement of the manholes discharge shapes measures the fitness of the calibrated 1D surface-network.

Keywords:
calibration / coupled models / flood extents / urban flooding
Source:
Water Science and Technology, 2011, 64, 5, 1016-1024
Funding / projects:
  • Urban Flood Management Research Priority Area of the Flood Risk Management Research Consortium (FRMR
  • UK Engineering and Physical Sciences Research Council (EPSRC) / Engineering and Physical Sciences Research Council GR/S76304/01
  • NERC
  • DEFRA
  • EA
  • Scottish Executive
  • Rivers Agency (Northern Ireland)
  • UKWIR
  • Portuguese Foundation for Science and Technology (FCT) PTDC/AAC-AMB/101197/2008

DOI: 10.2166/wst.2011.467

ISSN: 0273-1223

PubMed: 22214046

WoS: 000295032600002

Scopus: 2-s2.0-80052736371
[ Google Scholar ]
54
49
URI
https://grafar.grf.bg.ac.rs/handle/123456789/349
Collections
  • Radovi istraživača / Researcher's publications
  • Катедра за хидротехнику и водно-еколошко инжењерство
Institution/Community
GraFar
TY  - JOUR
AU  - Leandro, J.
AU  - Đorđević, Slobodan
AU  - Chen, A. S.
AU  - Savić, D. A.
AU  - Stanić, Miloš
PY  - 2011
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/349
AB  - Recently increased flood events have been prompting researchers to improve existing coupled flood-models such as one-dimensional (1D)/1D and 1D/two-dimensional (2D) models. While 1D/1D models simulate sewer and surface networks using a one-dimensional approach, 1D/2D models represent the surface network by a two-dimensional surface grid. However their application raises two issues to urban flood modellers: (1) stormwater systems planning/emergency or risk analysis demands for fast models, and the 1D/2D computational time is prohibitive, (2) and the recognized lack of field data (e. g. Hunter et al. (2008)) causes difficulties for the calibration/validation of 1D/1D models. In this paper we propose to overcome these issues by calibrating a 1D/1D model with the results of a 1D/2D model. The flood-inundation results show that: (1) 1D/2D results can be used to calibrate faster 1D/1D models, (2) the 1D/1D model is able to map the 1D/2D flood maximum extent well, and the flooding limits satisfactorily in each time-step, (3) the 1D/1D model major differences are the instantaneous flow propagation and overestimation of the flood-depths within surface-ponds, (4) the agreement in the volume surcharged by both models is a necessary condition for the 1D surface-network validation and (5) the agreement of the manholes discharge shapes measures the fitness of the calibrated 1D surface-network.
T2  - Water Science and Technology
T1  - Calibration of a 1D/1D urban flood model using 1D/2D model results in the absence of field data
EP  - 1024
IS  - 5
SP  - 1016
VL  - 64
DO  - 10.2166/wst.2011.467
ER  - 
@article{
author = "Leandro, J. and Đorđević, Slobodan and Chen, A. S. and Savić, D. A. and Stanić, Miloš",
year = "2011",
abstract = "Recently increased flood events have been prompting researchers to improve existing coupled flood-models such as one-dimensional (1D)/1D and 1D/two-dimensional (2D) models. While 1D/1D models simulate sewer and surface networks using a one-dimensional approach, 1D/2D models represent the surface network by a two-dimensional surface grid. However their application raises two issues to urban flood modellers: (1) stormwater systems planning/emergency or risk analysis demands for fast models, and the 1D/2D computational time is prohibitive, (2) and the recognized lack of field data (e. g. Hunter et al. (2008)) causes difficulties for the calibration/validation of 1D/1D models. In this paper we propose to overcome these issues by calibrating a 1D/1D model with the results of a 1D/2D model. The flood-inundation results show that: (1) 1D/2D results can be used to calibrate faster 1D/1D models, (2) the 1D/1D model is able to map the 1D/2D flood maximum extent well, and the flooding limits satisfactorily in each time-step, (3) the 1D/1D model major differences are the instantaneous flow propagation and overestimation of the flood-depths within surface-ponds, (4) the agreement in the volume surcharged by both models is a necessary condition for the 1D surface-network validation and (5) the agreement of the manholes discharge shapes measures the fitness of the calibrated 1D surface-network.",
journal = "Water Science and Technology",
title = "Calibration of a 1D/1D urban flood model using 1D/2D model results in the absence of field data",
pages = "1024-1016",
number = "5",
volume = "64",
doi = "10.2166/wst.2011.467"
}
Leandro, J., Đorđević, S., Chen, A. S., Savić, D. A.,& Stanić, M.. (2011). Calibration of a 1D/1D urban flood model using 1D/2D model results in the absence of field data. in Water Science and Technology, 64(5), 1016-1024.
https://doi.org/10.2166/wst.2011.467
Leandro J, Đorđević S, Chen AS, Savić DA, Stanić M. Calibration of a 1D/1D urban flood model using 1D/2D model results in the absence of field data. in Water Science and Technology. 2011;64(5):1016-1024.
doi:10.2166/wst.2011.467 .
Leandro, J., Đorđević, Slobodan, Chen, A. S., Savić, D. A., Stanić, Miloš, "Calibration of a 1D/1D urban flood model using 1D/2D model results in the absence of field data" in Water Science and Technology, 64, no. 5 (2011):1016-1024,
https://doi.org/10.2166/wst.2011.467 . .

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