Počet záznamů: 1

PIV analysis of near-wake flow patterns of an ice-accreted bridge cable in low and moderately turbulent wind

SYSNO ASEP	0505717
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	PIV analysis of near-wake flow patterns of an ice-accreted bridge cable in low and moderately turbulent wind
Tvůrce(i)	Górski, P. (PL) Pospíšil, Stanislav (UTAM-F)_{RID, SAI, ORCID} Tatara, M. (PL) Trush, Arsenii (UTAM-F)_{RID, SAI, ORCID}
Celkový počet autorů	4
Zdroj.dok.	Journal of Wind Engineering and Industrial Aerodynamics. - : Elsevier - ISSN 0167-6105 Roč. 191, August (2019), s. 297-311
Poč.str.	15 s.
Forma vydání	Tištěná - P
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	bridge cable ; ice accretion ; flow visualization ; particle image velocimetry ; near-wake ; vortex street ; velocity field ; streamline patterns
Vědní obor RIV	JM - Inženýrské stavitelství
Obor OECD	Civil engineering
CEP	GA19-04695S GA ČR - Grantová agentura ČR
Způsob publikování	Omezený přístup
Institucionální podpora	UTAM-F - RVO:68378297
UT WOS	000474561600023
EID SCOPUS	85068217962
DOI	10.1016/j.jweia.2019.06.011
Anotace	The study contributes to the explanation of flow behaviour and the basis of phenomena existing during two dimensional airflow around an ice-accreted cylinder, representing the section model of a bridge cable. The geometrical features and flow characteristics of the near-wake flow patterns of the iced cable were investigated within the Reynolds number range of 2.2⋅10^4–6.4⋅10^4 in low and moderately turbulent flow. The experimental procedure was conducted to create ice accretion on the cylindrical model. The shape of the ice was registered using a photogrammetry method. For the aerodynamic investigations the ice-accreted model was reproduced at a smaller scale by means of 3D printing. Representative snapshots of the flow field behind the stationary horizontal simulated iced cable were digitally analyzed by the Particle Image Velocimetry technique. The flow visualization provided quantitative data about the velocity and the direction of flow streams within both the near-wake and the sidewise regions of distributed flow around the model. Evidence of the existence of the vortex excitation proces was obtained at three principal angles of attack. The characteristics of the vortex street and the location of the flow boundary layer separation points were recognized. The obtained results were compared with results for a smooth cylinder.
Pracoviště	Ústav teoretické a aplikované mechaniky
Kontakt	Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285
Rok sběru	2020
Elektronická adresa	https://doi.org/10.1016/j.jweia.2019.06.011

Počet záznamů: 1