Estimation of Roughness Profile in Trapezoidal Open Channels

Atanov, G. A.; Evseeva, Elena G.; Meselhe, E. A.

doi:10.1061/(asce)0733-9429(1999)125:3(309)

Cited by 44 publications

(28 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Liggett and Chen [17] applied this method to the looped water-supply network while Atanov et al [3] used it to the roughness identifi cation of trapezoidal channels.…”

Section: Archives Of Environmental Protection Vol 39 No 1 Pp 105 -mentioning

confidence: 99%

Inverse Problem for Looped River Networks – Lower oder River Case Study

Kurnatowski

2013

Archives of Environmental Protection

View full text Add to dashboard Cite

Identifi cation of coeffi cients determining fl ow resistance, in particular Manning's roughness coeffi cients, is one of the possible inverse problems of mathematical modeling of fl ow distribution in looped river networks. The paper presents the solution of this problem for the lower Oder River network consisting of 78 branches connected by 62 nodes. Using results of six sets of fl ow measurements at particular network branches it was demonstrated that the application of iterative algorithm for roughness coeffi cients identifi cation on the basis of the sensitivity-equation method leads to the explicit solution for all network branches, independent from initial values of identifi ed coeffi cients.

show abstract

“…Liggett and Chen [17] applied this method to the looped water-supply network while Atanov et al [3] used it to the roughness identifi cation of trapezoidal channels.…”

Section: Archives Of Environmental Protection Vol 39 No 1 Pp 105 -mentioning

confidence: 99%

Inverse Problem for Looped River Networks – Lower oder River Case Study

Kurnatowski

2013

Archives of Environmental Protection

View full text Add to dashboard Cite

show abstract

“…Este tipo de abordagem foi proposto inicialmente por Atanov et al (1999). Por se tratar de um modelo, as equações hidrodinâmicas precisam ter os seus parâmetros ajustados.…”

Section: Introductionunclassified

Uso de modelo hidrodinâmico para determinação da vazão a partir de medições de nível

Oliveira

Pereira

Soares

et al. 2016

RBRH

View full text Add to dashboard Cite

Este é um artigo publicado em acesso aberto (Open Access) sob a licença Creative Commons Attribution, que permite uso, distribuição e reprodução em qualquer meio, sem restrições desde que o trabalho original seja corretamente citado. RESUMOO uso de modelos hidrodinâmicos para a determinação das vazões em cursos d'água tem crescido nos últimos anos devido aos problemas relativos à utilização do método da curva-chave para monitoramento das vazões. Este trabalho tem por objetivo desenvolver um método para determinação das vazões em canais abertos utilizando algoritmos evolucionários multiobjetivos (NSGA-II) e medições de nível da superfície livre associadas a um modelo hidrodinâmico. Dados obtidos de ensaios em um canal experimental de laboratório foram utilizados para calibração e validação do modelo. O algoritmo de otimização NSGA-II apresentou excelentes resultados, obtendo-se coeficientes de Nash-Sutcliffe superiores a 0,99 tanto para a calibração quanto para a validação do modelo hidrodinâmico. As vazões calculadas pelo modelo hidrodinâmico apresentaram uma variação de até 150% para um mesmo nível quando comparadas às vazões estimadas pela curva-chave, o que demonstrou que o uso da curva-chave para medição de vazão em regime variável apresenta erros elevados. Palavras-chave:Otimização multiobjetivo; Equações de Saint-Venant; Escoamento não permanente; NSGA-II; Curva-chave. ABSTRACTThe use of hydrodynamic models to determine stream discharges has been grown in recent years due to the problems regarding the use of rating curve method for discharge estimating. This study aims to develop a method for determining discharges in open channels using multiobjective evolutionary algorithms (NSGA-II) and free surface level measurements associated with a hydrodynamic model. Data obtained from experiments on a laboratory experimental channel have been used for model calibration and validation. NSGA-II optimization algorithm presented excellent results and Nash-Sutcliffe coefficients greater than 0.99 have been obtained for both calibration and validation of the hydrodynamic model. Discharges calculated by the hydrodynamic model showed variations of up to 150% for the same level when compared to the discharges estimated by the rating curve, which showed that the use of rating curve for discharge measurements during transient flows results in high errors.

show abstract

“…It has been widely applied to assimilate in situ and remotely sensed hydrological data from multi-sources into the runoff-rainfall model and land surface model (Bateni et al, 2013;Le Dimet et al, 2009;Lee et al, 2012;Reichle, 2008). Also, it has been successfully applied to improve the predictive capability of 1-D and 2-D hydraulic models (Atanov et al, 1999;Bélanger and Vincent, 2005;Ding, 2004;Honnorat et al, 2007Honnorat et al, , 2009; Roux and Dartus, 2006).…”

Section: Introductionmentioning

confidence: 99%

Variational assimilation of remotely sensed flood extents using a 2-D flood model

Lai

Liang

Daillet

2014

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract.A variational data assimilation (4D-Var) method is proposed to directly assimilate flood extents into a 2-D dynamic flood model to explore a novel way of utilizing the rich source of remotely sensed data available from satellite imagery for better analyzing or predicting flood routing processes. For this purpose, a new cost function is specially defined to effectively fuse the hydraulic information that is implicitly indicated in flood extents. The potential of using remotely sensed flood extents for improving the analysis of flood routing processes is demonstrated by applying the present new data assimilation approach to both idealized and realistic numerical experiments.

show abstract

Estimation of Roughness Profile in Trapezoidal Open Channels

Cited by 44 publications

References 3 publications

Inverse Problem for Looped River Networks – Lower oder River Case Study

Inverse Problem for Looped River Networks – Lower oder River Case Study

Uso de modelo hidrodinâmico para determinação da vazão a partir de medições de nível

Variational assimilation of remotely sensed flood extents using a 2-D flood model

Contact Info

Product

Resources

About