Computation of drag and lift coefficients for simple two-dimensional objects with Reynolds number RE=420 000

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F12%3A43921789" target="_blank" >RIV/49777513:23640/12:43921789 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1051/epjconf/20122501047" target="_blank" >http://dx.doi.org/10.1051/epjconf/20122501047</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/20122501047" target="_blank" >10.1051/epjconf/20122501047</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Computation of drag and lift coefficients for simple two-dimensional objects with Reynolds number RE=420 000

Popis výsledku v původním jazyce

The article deals with comparison of drag and lift coefficients for simple two-dimensional objects,which are often discussed in fluid mechanics fundamentals books. The commercial CFD software FLUENT 13 was used for computation of flow fields around the objects and determination of the drag and lift coefficients.The flow fields of the two-dimensional objects were computed for velocity up to 160 km per hour and Reynolds number Re=420000. Main purpose was to verify the suggested computational domain and model settings for further more complex objects geometries. The more complex profiles are used to stabilize asymmetrical ('z'-shaped) pantographs of high-speed trains. The trains are used in two-way traffic where the pantographs have to operate with the same characteristics in both directions. Results of the CFD computations show oscillation of the drag and lift coefficients over time. The results are compared with theoretical and experimental data and discussed. Some examples are presente

Název v anglickém jazyce

Computation of drag and lift coefficients for simple two-dimensional objects with Reynolds number RE=420 000

Popis výsledku anglicky

The article deals with comparison of drag and lift coefficients for simple two-dimensional objects,which are often discussed in fluid mechanics fundamentals books. The commercial CFD software FLUENT 13 was used for computation of flow fields around the objects and determination of the drag and lift coefficients.The flow fields of the two-dimensional objects were computed for velocity up to 160 km per hour and Reynolds number Re=420000. Main purpose was to verify the suggested computational domain and model settings for further more complex objects geometries. The more complex profiles are used to stabilize asymmetrical ('z'-shaped) pantographs of high-speed trains. The trains are used in two-way traffic where the pantographs have to operate with the same characteristics in both directions. Results of the CFD computations show oscillation of the drag and lift coefficients over time. The results are compared with theoretical and experimental data and discussed. Some examples are presente

Druh

D - Stať ve sborníku

CEP obor

JU - Aeronautika, aerodynamika, letadla

OECD FORD obor

—

Projekt

<a href="/cs/project/1M06031" target="_blank" >1M06031: Materiály a komponenty pro ochranu životního prostředí</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

EPJ Web of Conferences, Conference on Experimental Fluid Mechanics, EFM 2011

ISBN

—

ISSN

2101-6275

e-ISSN

—

Počet stran výsledku

6

Strana od-do

1-6

Název nakladatele

EPJ Web of Conferences

Místo vydání

Cedex A

Místo konání akce

Jičín

Datum konání akce

22. 11. 2011

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

—