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Investigación de vangarda para o desenvolvemento sostible

O CITEEC realiza investigación avanzada en enxeñaría civil, materiais, sustentabilidade e infraestruturas. A través de proxectos multidisciplinarios e colaboracións internacionais, xéranse publicacións científicas que abordan retos crave do sector. Nesta sección preséntanse as principais publicacións e resultados obtidos polos nosos grupos de investigación.

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Investigación de vangarda para o desenvolvemento sostible

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2016

Fraga, Ignacio; Cea-Gómez, Luis; Puertas-Agudo, Jerónimo; Suárez-López, Joaquín; Jiménez, Vicente; Jácome-Burgos, Juan Alfredo

Global sensitivity and GLUE-based uncertainty analysis of a 2D-1D dual urban drainage model Journal Article

In: Journal of Hydrologic Engineering, vol. 21, no. 5, 2016, ISSN: 10840699, (cited By 41).

Abstract | Links | BibTeX | Etiquetas: calibration; hydrological modeling; hydrological response; two-dimensional modeling; uncertainty analysis; urban drainage, Catchments; Glues; Gluing; Nonlinear equations; Rain; Runoff; Sewers, Generalized likelihood uncertainty estimation; Global sensitivity; Model calibration; Model validation; Rainfall runoff; Urban drainage model, Uncertainty analysis

@article{Fraga2016,

title = {Global sensitivity and GLUE-based uncertainty analysis of a 2D-1D dual urban drainage model},

author = {Ignacio Fraga and Luis Cea-Gómez and Jerónimo Puertas-Agudo and Joaquín Suárez-López and Vicente Jiménez and Juan Alfredo Jácome-Burgos},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84964692558&doi=10.1061%2f%28ASCE%29HE.1943-5584.0001335&partnerID=40&md5=66dbee243579b6ca8b79c9ed6a9a3941},

doi = {10.1061/(ASCE)HE.1943-5584.0001335},

issn = {10840699},

year  = {2016},

date = {2016-01-01},

urldate = {2016-01-01},

journal = {Journal of Hydrologic Engineering},

volume = {21},

number = {5},

publisher = {American Society of Civil Engineers (ASCE)},

abstract = {This paper presents a global sensitivity and uncertainty analysis of a dual drainage model applied to a 0.049km2 (4.9-ha) urban catchment based on generalized likelihood uncertainty estimation (GLUE). The model solves the nonlinear bidimensional (2D) and one-dimensional (1D) Saint-Venant equations to compute respectively the surface runoff and the flow in the sewer network. The sensitivity of the outlet hydrograph to the input parameters of the model was determined by using variance-based Sobol sensitivity indices. These indices highlight the great effect of the overland flow parameters on the model output, in contrast with the limited effect of the sewer-network parameters. The Manning coefficient of the impervious terrains was identified as the most influential model parameter. The effect on model calibration of two subjective factors of the GLUE methodology (the acceptability threshold and the shaping factor of the likelihood function) was analyzed. From this analysis, a NSE acceptability threshold of 0.6 and a shaping factor of 1 were adopted for model calibration. Greater values of these parameters resulted in very narrow uncertainty bounds and therefore in low coverage ratios. The results obtained after calibration and validation show a satisfactory performance of the model, with NSE values within 0.78 and 0.98 and coverage ratios of the 95% confidence intervals in the range 66-91%. The worst performances are obtained in the events with lowest rainfall depths, since in those cases the overland flow in the whole catchment is extremely shallow and the runoff propagation is not well captured by the model. © 2016 American Society of Civil Engineers.},

note = {cited By 41},

keywords = {calibration; hydrological modeling; hydrological response; two-dimensional modeling; uncertainty analysis; urban drainage, Catchments; Glues; Gluing; Nonlinear equations; Rain; Runoff; Sewers, Generalized likelihood uncertainty estimation; Global sensitivity; Model calibration; Model validation; Rainfall runoff; Urban drainage model, Uncertainty analysis},

pubstate = {published},

tppubtype = {article}

}