Numerical Modelling of the Aerodynamic Roughness of Trapezoidal and Corrugated Sheets

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27120%2F15%3A86094995" target="_blank" >RIV/61989100:27120/15:86094995 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4203/ccp.108.267" target="_blank" >http://dx.doi.org/10.4203/ccp.108.267</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4203/ccp.108.267" target="_blank" >10.4203/ccp.108.267</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical Modelling of the Aerodynamic Roughness of Trapezoidal and Corrugated Sheets

Popis výsledku v původním jazyce

The shape of a covering of smokestacks significantly influences the load from wind effects. In civil engineering practice, particularly for high chimneys, there is often a requirement for their coating with shaped sheet metal as a result of dilatation. The calculation of load effects according to the valid standard only takes into account the size of roughness of the flow around the body, therefore the size of the wave-height sheet regardless of its shape is ignored, which in some cases leads to a substantial increase of the coefficient forces. This paper deals with the possibilities of defining of an equivalent aerodynamic drag coefficient value for flow around a sheathed chimney referred to as the aforementioned coefficient forces. The problem is solved numerically using the finite volume computational fluid dynamics codes in the software ANSYS Fluent. Meshing of the shaped sheathing makes high demands on the number of cells in the computational area currently unrealistic for desktop

Název v anglickém jazyce

Numerical Modelling of the Aerodynamic Roughness of Trapezoidal and Corrugated Sheets

Popis výsledku anglicky

The shape of a covering of smokestacks significantly influences the load from wind effects. In civil engineering practice, particularly for high chimneys, there is often a requirement for their coating with shaped sheet metal as a result of dilatation. The calculation of load effects according to the valid standard only takes into account the size of roughness of the flow around the body, therefore the size of the wave-height sheet regardless of its shape is ignored, which in some cases leads to a substantial increase of the coefficient forces. This paper deals with the possibilities of defining of an equivalent aerodynamic drag coefficient value for flow around a sheathed chimney referred to as the aforementioned coefficient forces. The problem is solved numerically using the finite volume computational fluid dynamics codes in the software ANSYS Fluent. Meshing of the shaped sheathing makes high demands on the number of cells in the computational area currently unrealistic for desktop

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Civil-Comp proceedings. Volume 108

ISBN

978-1-905088-63-8

ISSN

1759-3433

e-ISSN

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Počet stran výsledku

9

Strana od-do

1-9

Název nakladatele

Civil-Comp Press

Místo vydání

Kippen, Stirlingshire

Místo konání akce

Praha

Datum konání akce

1. 9. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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