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Statements

Subject Item
n2:RIV%2F61989100%3A27740%2F14%3A86092006%21RIV15-MSM-27740___
rdf:type
n7:Vysledek skos:Concept
dcterms:description
The construction of accurate numerical hydrodynamic models is an important task for flood simulations. Accurate modelling is essential not only for flood simulations but also for detection of events that can cause damage on property or human lives. This work presents a comprehensive methodology for building of hydrodynamic model on large area (approx. 1000 km2). The model was built using 1-D hydrodynamic program HEC-RAS. Study area is Ostravica catchment (827.4 km2). Which is located in the north-east of the Czech republic. The study area was selected on the basis of the accessibility of topographic data and regularly repeated events. The model was subdivided into 24 unique schematizations which were joined with boundary conditions (mainly flow hydrograph or rating curve). Boundary conditions have been obtained from river stations which cover the whole catchment. Manning’s values, contraction and expansion coefficients were applied across the whole domain. Manning roughness coefficient was used in the Manning’s formula for flow calculation in open flow channels. Usual Manning’s value for channels in CR is 0.035. The values outside the river channel were derived from the land cover layer. Storage areas, bridges and other obstacles were included into hydrodynamic model as well. Calibration and validation were separated tasks and were carried out with separate data. The calibration phase was done using May 2010 flood event and the validation was done using August 2009 flood event. The results of the large-scale hydrodynamic model has shown that relatively good match with real state. Developed model may have following problems: problematic parameterization and to maintain all part on the same level of computational accuracy. The problems related to computational time are strongly depended on available hardware. The calibrated model provides a diagnostic tool for future analyses of flood events. Developed model will be incorporated into the Floreon+ in the near future. The construction of accurate numerical hydrodynamic models is an important task for flood simulations. Accurate modelling is essential not only for flood simulations but also for detection of events that can cause damage on property or human lives. This work presents a comprehensive methodology for building of hydrodynamic model on large area (approx. 1000 km2). The model was built using 1-D hydrodynamic program HEC-RAS. Study area is Ostravica catchment (827.4 km2). Which is located in the north-east of the Czech republic. The study area was selected on the basis of the accessibility of topographic data and regularly repeated events. The model was subdivided into 24 unique schematizations which were joined with boundary conditions (mainly flow hydrograph or rating curve). Boundary conditions have been obtained from river stations which cover the whole catchment. Manning’s values, contraction and expansion coefficients were applied across the whole domain. Manning roughness coefficient was used in the Manning’s formula for flow calculation in open flow channels. Usual Manning’s value for channels in CR is 0.035. The values outside the river channel were derived from the land cover layer. Storage areas, bridges and other obstacles were included into hydrodynamic model as well. Calibration and validation were separated tasks and were carried out with separate data. The calibration phase was done using May 2010 flood event and the validation was done using August 2009 flood event. The results of the large-scale hydrodynamic model has shown that relatively good match with real state. Developed model may have following problems: problematic parameterization and to maintain all part on the same level of computational accuracy. The problems related to computational time are strongly depended on available hardware. The calibrated model provides a diagnostic tool for future analyses of flood events. Developed model will be incorporated into the Floreon+ in the near future.
dcterms:title
MODELLING LARGE - SCALE HYDRODYNAMIC MODEL USING HEC-RAS MODELLING LARGE - SCALE HYDRODYNAMIC MODEL USING HEC-RAS
skos:prefLabel
MODELLING LARGE - SCALE HYDRODYNAMIC MODEL USING HEC-RAS MODELLING LARGE - SCALE HYDRODYNAMIC MODEL USING HEC-RAS
skos:notation
RIV/61989100:27740/14:86092006!RIV15-MSM-27740___
n3:aktivita
n5:P
n3:aktivity
P(ED1.1.00/02.0070), P(EE2.3.30.0055)
n3:dodaniDat
n4:2015
n3:domaciTvurceVysledku
n12:4178904 n12:1224492 Podhorányi, Michal
n3:druhVysledku
n20:D
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
29885
n3:idVysledku
RIV/61989100:27740/14:86092006
n3:jazykVysledku
n18:eng
n3:klicovaSlova
hydrodynamic model, HEC-RAS, flood, modelling
n3:klicoveSlovo
n10:modelling n10:hydrodynamic%20model n10:flood n10:HEC-RAS
n3:kontrolniKodProRIV
[FBDE6AA74632]
n3:mistoKonaniAkce
Albena
n3:mistoVydani
Sofia
n3:nazevZdroje
SGEM 2014 : 14th International Multidisciplinary Scientific Geoconference : Geoconference on Water Resources. Forest, Marine and Ocean Ecosystems : 17-26, June, 2014, Albena, Bulgaria : conference proceedings. Volume I, Hydrology and water resources
n3:obor
n19:DA
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:projekt
n8:ED1.1.00%2F02.0070 n8:EE2.3.30.0055
n3:rokUplatneniVysledku
n4:2014
n3:tvurceVysledku
Fedorčák, Dušan Podhorányi, Michal Kocyan, Tomáš
n3:typAkce
n21:WRD
n3:zahajeniAkce
2014-06-17+02:00
s:issn
1314-2704
s:numberOfPages
8
n16:doi
10.5593/SGEM2014/B31/S12.062
n15:hasPublisher
STEF92 Technology Ltd.
n17:isbn
978-619-7105-13-1
n22:organizacniJednotka
27740