TY - JOUR
TI - Investigations of Strouhal numbers of iced cable models of cable-supported
	bridges with respect to angle of wind attack
AU - Górski, Piotr
AU - Tatara, Marcin
AU - Pospišil, Stanislav
AU - Kuznetsov, Sergey
AU - Marušić, Ante
TI - Investigations of Strouhal numbers of iced cable models of cable-supported
	bridges with respect to angle of wind attack
AB - 
	The influence of the ice accretion, angle of attack and Reynolds number on the flow field around iced cables of cablesupported bridges is not clearly understood. The Strouhal number is one of the most important parameters which is necessary for an analysis of the vortex excitation response of slender structures. This paper presents the method and results of wind tunnel investigations of the Strouhal number of stationary iced cable models of cable-supported bridges. The investigations were conducted in a climatic wind tunnel laboratory of the Czech Academy of Sciences in Telč. The methodology leading to the experimental icing of the inclined cable model in the climatic section of the laboratory was prepared. The shape of the ice on the cable was registered by photogrammetry and numerical evaluation. For the aerodynamic investigations, the iced cable model in a smaller scale was reproduced using a 3D printing procedure. The Strouhal number was determined within the range of the Reynolds number between 2.4·104 and 16.4·104, based on the dominant vortex shedding frequency measured in the flow behind the model. The model was orientated at three principal angles of wind attack for each of the Reynolds number values. In order to recognize the tunnel blockage effect, the Strouhal number of a smooth circular cylinder was tested. Strong agreement with the generally reported value in the subcritical Reynolds number range for a circular cylinder was obtained.
VL - 2015
IS - Budownictwo Zeszyt 2-B (12) 2015
PY - 2015
SN - 0011-4561
C1 - 2353-737X
SP - 417
EP - 432
DO - 10.4467/2353737XCT.15.147.4184
UR - https://ejournals.eu/czasopismo/czasopismo-techniczne/artykul/investigations-of-strouhal-numbers-of-iced-cable-models-of-cable-supported-bridges-with-respect-to-angle-of-wind-attack
KW - bridge cable
KW - ice accretion
KW - Strouhal number
KW - angle of attack
KW - vortex shedding frequency