Wake characteristics of ice-accreted cylindrical bars in a cross-flow at subcritical Reynolds numbers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F18%3A00482806" target="_blank" >RIV/68378297:_____/18:00482806 - isvavai.cz</a>

Výsledek na webu

<a href="https://ascelibrary.org/doi/abs/10.1061/%28ASCE%29AS.1943-5525.0000816" target="_blank" >https://ascelibrary.org/doi/abs/10.1061/%28ASCE%29AS.1943-5525.0000816</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1061/(ASCE)AS.1943-5525.0000816" target="_blank" >10.1061/(ASCE)AS.1943-5525.0000816</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Wake characteristics of ice-accreted cylindrical bars in a cross-flow at subcritical Reynolds numbers

Popis výsledku v původním jazyce

Ice accretion can considerably alter aerodynamic characteristics of bridge cables. The present study focuses on flow characteristics in the cable wake for three arrangements of ice accretion on the cable surface. This is studied for the subcritical flow regime (subcritical Reynolds numbers) at various downwind distances of the cable. The analysis is based on velocity and force measurements carried out in a boundary-layer wind tunnel. Two different bridge-cable models are used, i.e., smooth cylinder representing dry cable, and artificially roughened cable representing ice-accreted bridge cable. The effects of ice accretion on flow characteristics in the cable wake are particularly exhibited when ice is oriented laterally downward for the cable section mounted horizontally in the wind tunnel. This is characterized by strong velocity reduction and turbulence enhancement in the cable wake.

Název v anglickém jazyce

Wake characteristics of ice-accreted cylindrical bars in a cross-flow at subcritical Reynolds numbers

Popis výsledku anglicky

Ice accretion can considerably alter aerodynamic characteristics of bridge cables. The present study focuses on flow characteristics in the cable wake for three arrangements of ice accretion on the cable surface. This is studied for the subcritical flow regime (subcritical Reynolds numbers) at various downwind distances of the cable. The analysis is based on velocity and force measurements carried out in a boundary-layer wind tunnel. Two different bridge-cable models are used, i.e., smooth cylinder representing dry cable, and artificially roughened cable representing ice-accreted bridge cable. The effects of ice accretion on flow characteristics in the cable wake are particularly exhibited when ice is oriented laterally downward for the cable section mounted horizontally in the wind tunnel. This is characterized by strong velocity reduction and turbulence enhancement in the cable wake.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of Aerospace Engineering

ISSN

0893-1321

e-ISSN

—

Svazek periodika

31

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

000422799400019

EID výsledku v databázi Scopus

2-s2.0-85038400426