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  • The paper deals with numerical modelling of body aerodynamic drag coefficient in the transition from laminar to turbulent flow regimes, where the selection of a suitable numerical model is problematic. On the basic problem of flow around a simple body – sphere selected computational models are tested. The values obtained by numerical simulations of drag coefficients of each model are compared with the graph of dependency of the drag coefficient vs. Reynolds number for a sphere. Next the dependency of Strouhal number vs. Reynolds number is evaluated, where the vortex shedding frequency values for given speed are obtained numerically and experimentally and then the values are compared for each numerical model and experiment. The aim is to specify trends for the selection of appropriate numerical model for flow around bodies problem in which the precise description of the flow field around the obstacle is used to define the acoustic noise source. Numerical modelling is performed by finite volume method using CFD code.
  • The paper deals with numerical modelling of body aerodynamic drag coefficient in the transition from laminar to turbulent flow regimes, where the selection of a suitable numerical model is problematic. On the basic problem of flow around a simple body – sphere selected computational models are tested. The values obtained by numerical simulations of drag coefficients of each model are compared with the graph of dependency of the drag coefficient vs. Reynolds number for a sphere. Next the dependency of Strouhal number vs. Reynolds number is evaluated, where the vortex shedding frequency values for given speed are obtained numerically and experimentally and then the values are compared for each numerical model and experiment. The aim is to specify trends for the selection of appropriate numerical model for flow around bodies problem in which the precise description of the flow field around the obstacle is used to define the acoustic noise source. Numerical modelling is performed by finite volume method using CFD code. (en)
Title
  • The influence of numerical models on determining the drag coefficient
  • The influence of numerical models on determining the drag coefficient (en)
skos:prefLabel
  • The influence of numerical models on determining the drag coefficient
  • The influence of numerical models on determining the drag coefficient (en)
skos:notation
  • RIV/61989100:27230/14:86091756!RIV15-MSM-27230___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • S
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
  • 21537
http://linked.open...ai/riv/idVysledku
  • RIV/61989100:27230/14:86091756
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • CFD code; numerical model; sphere; Strouhal number; drag coefficient (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [62974916A8A1]
http://linked.open...v/mistoKonaniAkce
  • Kutná Hora
http://linked.open...i/riv/mistoVydani
  • Paříž
http://linked.open...i/riv/nazevZdroje
  • EPJ Web of Conferences. Volume 67
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Dobeš, Josef
  • Kozubková, Milada
http://linked.open...vavai/riv/typAkce
http://linked.open...ain/vavai/riv/wos
  • 000343672100022
http://linked.open.../riv/zahajeniAkce
issn
  • 2100-014X
number of pages
http://bibframe.org/vocab/doi
  • 10.1051/epjconf/20146702019
http://purl.org/ne...btex#hasPublisher
  • EDP Sciences
https://schema.org/isbn
  • 978-80-260-5375-0
http://localhost/t...ganizacniJednotka
  • 27230
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