The effort to reduce costs and environmental impact of modern commercial aircraft requires an ever better understanding of aircraft physics, including the characterisation of the effective damping introduced on a structure by slosh dynamics. In this paper the experimental characterisation of vertical sloshing dissipative behaviour of a rectangular tank, representative of a scaled wing tank, is addressed. Specifically, a controlled electrodynamic shaker is employed to provide vertical displacement by means of sine-sweep excitation. High vertical acceleration makes the free surface unstable, triggering a nonlinear chaotic regime of the liquid stowed inside that experiences violent impacts with the surfaces of the tank. The obtained time histories of the measured accelerations and dynamic forces are shown to be directly related to the energy dissipated by the impacting fluid.

Experimental characterisation of sloshing tank dissipative behaviour in vertical harmonic excitation / Saltari, Francesco; Pizzoli, Marco; Coppotelli, Giuliano; Gambioli, Francesco; Cooper, Jonathan E.; Mastroddi, Franco. - In: JOURNAL OF FLUIDS AND STRUCTURES. - ISSN 0889-9746. - 109:(2022). [10.1016/j.jfluidstructs.2021.103478]

Experimental characterisation of sloshing tank dissipative behaviour in vertical harmonic excitation

Saltari, Francesco;Pizzoli, Marco;Coppotelli, Giuliano;Gambioli, Francesco;Mastroddi, Franco
2022

Abstract

The effort to reduce costs and environmental impact of modern commercial aircraft requires an ever better understanding of aircraft physics, including the characterisation of the effective damping introduced on a structure by slosh dynamics. In this paper the experimental characterisation of vertical sloshing dissipative behaviour of a rectangular tank, representative of a scaled wing tank, is addressed. Specifically, a controlled electrodynamic shaker is employed to provide vertical displacement by means of sine-sweep excitation. High vertical acceleration makes the free surface unstable, triggering a nonlinear chaotic regime of the liquid stowed inside that experiences violent impacts with the surfaces of the tank. The obtained time histories of the measured accelerations and dynamic forces are shown to be directly related to the energy dissipated by the impacting fluid.
2022
vertical sloshing; experimental analysis; dissipative fluid behaviour
01 Pubblicazione su rivista::01a Articolo in rivista
Experimental characterisation of sloshing tank dissipative behaviour in vertical harmonic excitation / Saltari, Francesco; Pizzoli, Marco; Coppotelli, Giuliano; Gambioli, Francesco; Cooper, Jonathan E.; Mastroddi, Franco. - In: JOURNAL OF FLUIDS AND STRUCTURES. - ISSN 0889-9746. - 109:(2022). [10.1016/j.jfluidstructs.2021.103478]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1620436
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