Aerodynamic force coefficients of an ice-accreted bridge cable in low and moderately turbulent wind

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F20%3A00531972" target="_blank" >RIV/68378297:_____/20:00531972 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jweia.2020.104335" target="_blank" >https://doi.org/10.1016/j.jweia.2020.104335</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jweia.2020.104335" target="_blank" >10.1016/j.jweia.2020.104335</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Aerodynamic force coefficients of an ice-accreted bridge cable in low and moderately turbulent wind

Popis výsledku v původním jazyce

This study deals with the effects of wind turbulence on the mean aerodynamic drag, lift and moment coefficients of a stationary ice-accreted section model of a bridge cable for different wind angles of attack. The experiments were conducted in the Reynolds number range between 2,5⋅10E4 and 1,36⋅10E5. While the yawed/inclined cable model was experimentally iced in a climatic wind tunnel, the development of the ice shape was registered using photogrammetry. Later on, the ice-accreted model was reproduced on a smaller scale via three-dimensional printing. For the model in cross-flow, a series of wind tunnel tests were performed in low and moderately turbulent flow conditions with turbulence intensities of 3% and 12%, respectively. The obtained results were compared with those obtained experimentally for a circular smooth cylinder. The principal finding is that the flow turbulence significantly reduces the drag coefficient.

Název v anglickém jazyce

Aerodynamic force coefficients of an ice-accreted bridge cable in low and moderately turbulent wind

Popis výsledku anglicky

This study deals with the effects of wind turbulence on the mean aerodynamic drag, lift and moment coefficients of a stationary ice-accreted section model of a bridge cable for different wind angles of attack. The experiments were conducted in the Reynolds number range between 2,5⋅10E4 and 1,36⋅10E5. While the yawed/inclined cable model was experimentally iced in a climatic wind tunnel, the development of the ice shape was registered using photogrammetry. Later on, the ice-accreted model was reproduced on a smaller scale via three-dimensional printing. For the model in cross-flow, a series of wind tunnel tests were performed in low and moderately turbulent flow conditions with turbulence intensities of 3% and 12%, respectively. The obtained results were compared with those obtained experimentally for a circular smooth cylinder. The principal finding is that the flow turbulence significantly reduces the drag coefficient.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA19-04695S" target="_blank" >GA19-04695S: Aerodynamická odezva válce s povrchovou drsností v kritickém a přechodovém režimu Reynoldsova čísla</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of Wind Engineering and Industrial Aerodynamics

ISSN

0167-6105

e-ISSN

—

Svazek periodika

205

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

104335

Kód UT WoS článku

000573403600009

EID výsledku v databázi Scopus

2-s2.0-85090167994