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  • Proudění v náhlém asymetrickém rozšíření bylo řešeno programem Fluent 6.2. Hlavnm cílem bylo zachycení koherentních struktur a jejich vývoje v čase. Numerická simulace umožnila vizualizaci odtrhávajících se vírů a časově-prostorového chování vírů. V průběhu simulace byly zaznamenávány příčné složky rychlosti a vyhodnoceny pomocí Fourierovy transformace. Dominantní frekvence odtrhávajících se vírů je velice blízká frekvenci změřené pomocí laserové dopplerovské anemometrie. Dobrá shoda byla dosažena i pro spektrální výkonové hustoty. (cs)
  • Flow in asymmetric sudden expansion duct was studied using large eddy simulation incorporated in Fluent 6.2. Main focus was aimed on coherent structures and their time evolution. Numerical simulation enabled to visualize vortex shedding and spatio-temporal behavior of the vortices. Transversal velocity components were recorded and processed by Fourier transform. Dominant frequencies of the vortex shedding are close to the ones from LDA (Laser Doppler Anemometry) experiments. Spectral power densities (turbulence spectra) fit also quite well.
  • Flow in asymmetric sudden expansion duct was studied using large eddy simulation incorporated in Fluent 6.2. Main focus was aimed on coherent structures and their time evolution. Numerical simulation enabled to visualize vortex shedding and spatio-temporal behavior of the vortices. Transversal velocity components were recorded and processed by Fourier transform. Dominant frequencies of the vortex shedding are close to the ones from LDA (Laser Doppler Anemometry) experiments. Spectral power densities (turbulence spectra) fit also quite well. (en)
Title
  • Unsteady Characteristics of Sudden Expansion Flow
  • Nestacionární charakteristiky proudění v náhlém rozšíření (cs)
  • Unsteady Characteristics of Sudden Expansion Flow (en)
skos:prefLabel
  • Unsteady Characteristics of Sudden Expansion Flow
  • Nestacionární charakteristiky proudění v náhlém rozšíření (cs)
  • Unsteady Characteristics of Sudden Expansion Flow (en)
skos:notation
  • RIV/00216305:26210/06:PU63170!RIV07-GA0-26210___
http://linked.open.../vavai/riv/strany
  • 213-219
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GP101/06/P190)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 505080
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  • RIV/00216305:26210/06:PU63170
http://linked.open...riv/jazykVysledku
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  • sudden expansion, diffuser, coherent structure, vortex,large eddy simulation (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [8E13D31C6034]
http://linked.open...v/mistoKonaniAkce
  • Hrotovice
http://linked.open...i/riv/mistoVydani
  • Hrotovice
http://linked.open...i/riv/nazevZdroje
  • 12. uživatelská konference FLUENT 2006
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Rudolf, Pavel
  • Lichtneger, Petr
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
number of pages
http://purl.org/ne...btex#hasPublisher
  • Techsoft Engineering s.r.o., Praha
https://schema.org/isbn
  • 80-239-7211-1
http://localhost/t...ganizacniJednotka
  • 26210
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