To date no mathematical model is able to fully describe vortex-induced vibration (VIV). This work attempts to predict the Griffin plot of a 4:1 rectangular cylinder (i.e. peak oscillation amplitude during VIV against the Scruton number) by using models belonging to the well-known family of the wake-oscillator models. Such an accomplishment would be crucial for the design of bridge decks. For the Hartlen-Currie model, no set of empirical parameters allow for a correct prediction of the experimental data in the VIV range. In addition, by estimating the parameters at the lowest Scruton number, the predictions of the experimental Griffin plot to other Scruton numbers are not satisfactory.
Wake-oscillator models for vortex-induced vibrations of a 4:1 rectangular cylinder / Marra, Antonino Maria; Mannini, Claudio; Bartoli, Gianni. - ELETTRONICO. - (2016), pp. 1-7. (Intervento presentato al convegno 8th International Colloquium on Bluff Body Aerodynamics and Applications - BBAA 2016 tenutosi a Boston nel 7-11 Giugno 2016).
Wake-oscillator models for vortex-induced vibrations of a 4:1 rectangular cylinder
MARRA, ANTONINO MARIA;MANNINI, CLAUDIO;BARTOLI, GIANNI
2016
Abstract
To date no mathematical model is able to fully describe vortex-induced vibration (VIV). This work attempts to predict the Griffin plot of a 4:1 rectangular cylinder (i.e. peak oscillation amplitude during VIV against the Scruton number) by using models belonging to the well-known family of the wake-oscillator models. Such an accomplishment would be crucial for the design of bridge decks. For the Hartlen-Currie model, no set of empirical parameters allow for a correct prediction of the experimental data in the VIV range. In addition, by estimating the parameters at the lowest Scruton number, the predictions of the experimental Griffin plot to other Scruton numbers are not satisfactory.File | Dimensione | Formato | |
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