Investigation of Strouhal number of iced cable model of cable-supported bridges with respect to angle of wind attack

Górski, Piotr and Pospíšil, Stanislav and Kuznetsov, Sergeii and Tatara, Marcin and Marušić, Ante (2014) Investigation of Strouhal number of iced cable model of cable-supported bridges with respect to angle of wind attack. = Investigation of Strouhal number of iced cable model of cable-supported bridges with respect to angle of wind attack. In: 7th International symposium on environmental effects on building and people. Actions, influences, interactions, discomfort, 20-22.10.2014., Krakow, Poljska.

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Official URL: https://bib.irb.hr/prikazi-rad?&rad=777852

Abstract

The Strouhal number is one of the most important parameter which is necessary for an analysis of the vortex excitation response of slender structures. the paper presents the method and results of wind tunnel inverstigation of Strouhal number of iced cable model of cable-supported bridges. The investigation were conducted in the 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 registred by photogrammetry and a numerical evaluation. For the aerodymanic investigations the iced cable model on smaller scale was reproduced with 3D printing procedure. The Strouhal number was determined within the range of the Reynolds number between 2.8e4 and 12.2e4, 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.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): bridge cable - ice accretion - Strouhal number; angle of attack; vortex shedding frequency
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 500 Department of Energy, Power Engineering and Environment > 510 Power Engineering and Energy Management Chair
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 12 Sep 2017 12:49
Last Modified: 12 Sep 2017 12:49
URI: http://repozitorij.fsb.hr/id/eprint/7923

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