Interference skupin objektů zatížených účinky větru

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F04%3APU41862" target="_blank" >RIV/00216305:26110/04:PU41862 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

INTERFERENCE EFFECT OF GROUPED STRUCTURES EXPOSED TO THE WIND ACTION

Popis výsledku v původním jazyce

This paper deals with a numerical investigation of the full dynamic response of staggered circular cylinders. The system has a low damping ratio and flexible spring suspenders support both cylinders. The system is analyzed in 7 cases, changing the along-wind distance of the cylinders for 6D up to 24D by 3D. Across-wind distance of centers of the cylinders is 3D, where D is the diameter of cylinders. Calculated Reynolds number is 1000, thus the flow is laminar, belonging into the subcritical region. Twodominant frequencies are apparent from the across-wind forces. It is the natural frequency and the vortex shedding frequency. The distance 6D in ?the closest? case is enough to prevent the cylinders from the shielding effect, that may occur for X/D < 3,so that the along-wind response is similar in all computed cases. Comparing across-wind deflections we may deduce that the across-wind forces of the second cylinder are predominantly produced by the vortex shedding of the first cylinder.

Název v anglickém jazyce

INTERFERENCE EFFECT OF GROUPED STRUCTURES EXPOSED TO THE WIND ACTION

Popis výsledku anglicky

This paper deals with a numerical investigation of the full dynamic response of staggered circular cylinders. The system has a low damping ratio and flexible spring suspenders support both cylinders. The system is analyzed in 7 cases, changing the along-wind distance of the cylinders for 6D up to 24D by 3D. Across-wind distance of centers of the cylinders is 3D, where D is the diameter of cylinders. Calculated Reynolds number is 1000, thus the flow is laminar, belonging into the subcritical region. Twodominant frequencies are apparent from the across-wind forces. It is the natural frequency and the vortex shedding frequency. The distance 6D in ?the closest? case is enough to prevent the cylinders from the shielding effect, that may occur for X/D < 3,so that the along-wind response is similar in all computed cases. Comparing across-wind deflections we may deduce that the across-wind forces of the second cylinder are predominantly produced by the vortex shedding of the first cylinder.

Druh

D - Stať ve sborníku

CEP obor

JM - Inženýrské stavitelství

OECD FORD obor

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Projekt

<a href="/cs/project/GA103%2F03%2F0233" target="_blank" >GA103/03/0233: Citlivostní analýza stabilitních problémů tenkostěnných konstrukcí</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

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

Název statě ve sborníku

ECCOMAS 2004

ISBN

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ISSN

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e-ISSN

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Počet stran výsledku

12

Strana od-do

1-12

Název nakladatele

NEUVEDEN

Místo vydání

Jyväskylä, Finland

Místo konání akce

Jyväskylä (Finland)

Datum konání akce

24. 6. 2004

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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