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Statements

Subject Item
n2:RIV%2F61388998%3A_____%2F13%3A00392775%21RIV14-AV0-61388998
rdf:type
skos:Concept n3:Vysledek
dcterms:description
We have developed a LOcal-scale High-resolution atmospheric DIspersion Model using Large-Eddy Simulation (LOHDIM-LES) to assess the safety at nuclear facilities and to respond to emergencies against accidental or intentional release of radioactive materials (e.g., a terrorist attack in an urban area). In Part 1, the unsteady behavior of a plume over a flat terrain was successfully simulated. In Part 2, a new scheme to generate a spatially developing turbulent boundary layer flow was proposed. Then, the large-eddy simulation (LES) model for turbulent flow and plume dispersion around an isolated building was validated. In this study, we extend the LES model to turbulent flows and plume dispersion in various building arrays that represent typical urban surface geometries. Concerning the characteristics of flow and dispersion in building arrays, the flow patterns associated with obstacle densities and the distribution patterns of mean and root-mean-square (r.m.s.) concentrations agree well with those of the wind tunnel experiments. It is shown that the LES model successfully simulates the unsteady behaviors of turbulent flows and plume dispersion in urban-type surface geometries. We have developed a LOcal-scale High-resolution atmospheric DIspersion Model using Large-Eddy Simulation (LOHDIM-LES) to assess the safety at nuclear facilities and to respond to emergencies against accidental or intentional release of radioactive materials (e.g., a terrorist attack in an urban area). In Part 1, the unsteady behavior of a plume over a flat terrain was successfully simulated. In Part 2, a new scheme to generate a spatially developing turbulent boundary layer flow was proposed. Then, the large-eddy simulation (LES) model for turbulent flow and plume dispersion around an isolated building was validated. In this study, we extend the LES model to turbulent flows and plume dispersion in various building arrays that represent typical urban surface geometries. Concerning the characteristics of flow and dispersion in building arrays, the flow patterns associated with obstacle densities and the distribution patterns of mean and root-mean-square (r.m.s.) concentrations agree well with those of the wind tunnel experiments. It is shown that the LES model successfully simulates the unsteady behaviors of turbulent flows and plume dispersion in urban-type surface geometries.
dcterms:title
Development of local-scale high-resolution atmospheric dispersion model using large-eddy simulation. Part 3: turbulent flow and plume dispersion in building arrays Development of local-scale high-resolution atmospheric dispersion model using large-eddy simulation. Part 3: turbulent flow and plume dispersion in building arrays
skos:prefLabel
Development of local-scale high-resolution atmospheric dispersion model using large-eddy simulation. Part 3: turbulent flow and plume dispersion in building arrays Development of local-scale high-resolution atmospheric dispersion model using large-eddy simulation. Part 3: turbulent flow and plume dispersion in building arrays
skos:notation
RIV/61388998:_____/13:00392775!RIV14-AV0-61388998
n3:predkladatel
n4:ico%3A61388998
n6:aktivita
n16:I
n6:aktivity
I
n6:cisloPeriodika
5
n6:dodaniDat
n13:2014
n6:domaciTvurceVysledku
n11:8949573
n6:druhVysledku
n15:J
n6:duvernostUdaju
n14:S
n6:entitaPredkladatele
n7:predkladatel
n6:idSjednocenehoVysledku
69148
n6:idVysledku
RIV/61388998:_____/13:00392775
n6:jazykVysledku
n18:eng
n6:klicovaSlova
local-scale high-resolution dispersion model; nuclear emergency response system; large-eddy simulation; spatially developing turbulent boundary layer flow
n6:klicoveSlovo
n10:local-scale%20high-resolution%20dispersion%20model n10:nuclear%20emergency%20response%20system n10:large-eddy%20simulation n10:spatially%20developing%20turbulent%20boundary%20layer%20flow
n6:kodStatuVydavatele
JP - Japonsko
n6:kontrolniKodProRIV
[0ED26F06E73F]
n6:nazevZdroje
Journal of Nuclear Science and Technology
n6:obor
n12:DG
n6:pocetDomacichTvurcuVysledku
1
n6:pocetTvurcuVysledku
3
n6:rokUplatneniVysledku
n13:2013
n6:svazekPeriodika
50
n6:tvurceVysledku
Jurčáková, Klára Nakayama, H. Nagai, H.
n6:wos
000318276200005
s:issn
0022-3131
s:numberOfPages
17
n17:doi
10.1080/00223131.2013.785267