Experimental analysis of liquid vertical slosh damping at vacuum and atmospheric pressures

Lucian Constantin; Brano Titurus; Thomas C.S. Rendall; Joe J. De Courcy; Jonathan E. Cooper

doi:10.1016/j.jsv.2023.118228

Experimental analysis of liquid vertical slosh damping at vacuum and atmospheric pressures

Lucian Constantin^*, Brano Titurus, Thomas C.S. Rendall, Joe J. De Courcy, Jonathan E. Cooper

^*Corresponding author for this work

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Abstract

Experimental data are presented for a cantilevered vertically vibrating beam supporting a tank partially filled with liquid, inside a vacuum chamber where the air pressure can be reduced. Results are presented with and without the tank and contained liquid, as well as under two different gas pressures (atmospheric and vacuum). When the liquid is absent from the tank, aerodynamic damping and added mass effects are quantified. When the tank is partially filled with liquid, the damping versus tank amplitude curves indicate differences that are mainly due to aerodynamic effects, with more noticeable effects in the 50% fill case. The results support the observation that at the density ratios presented here, two-phase liquid/ gas modelling may not be needed for the evaluation of net damping due to violent sloshing flows.

Original language	English
Article number	118228
Journal	Journal of Sound and Vibration
Volume	574
Early online date	26 Dec 2023
DOIs	https://doi.org/10.1016/j.jsv.2023.118228
Publication status	Published - 31 Mar 2024

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Publisher Copyright:
© 2023 Elsevier Ltd

Keywords

Aerodynamic damping
Cantilevered beam
Vacuum
Vertical sloshing

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10.1016/j.jsv.2023.118228

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title = "Experimental analysis of liquid vertical slosh damping at vacuum and atmospheric pressures",

abstract = "Experimental data are presented for a cantilevered vertically vibrating beam supporting a tank partially filled with liquid, inside a vacuum chamber where the air pressure can be reduced. Results are presented with and without the tank and contained liquid, as well as under two different gas pressures (atmospheric and vacuum). When the liquid is absent from the tank, aerodynamic damping and added mass effects are quantified. When the tank is partially filled with liquid, the damping versus tank amplitude curves indicate differences that are mainly due to aerodynamic effects, with more noticeable effects in the 50% fill case. The results support the observation that at the density ratios presented here, two-phase liquid/ gas modelling may not be needed for the evaluation of net damping due to violent sloshing flows.",

keywords = "Aerodynamic damping, Cantilevered beam, Vacuum, Vertical sloshing",

author = "Lucian Constantin and Brano Titurus and Rendall, {Thomas C.S.} and {De Courcy}, {Joe J.} and Cooper, {Jonathan E.}",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

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doi = "10.1016/j.jsv.2023.118228",

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T1 - Experimental analysis of liquid vertical slosh damping at vacuum and atmospheric pressures

AU - Constantin, Lucian

AU - Titurus, Brano

AU - Rendall, Thomas C.S.

AU - De Courcy, Joe J.

AU - Cooper, Jonathan E.

PY - 2024/3/31

Y1 - 2024/3/31

N2 - Experimental data are presented for a cantilevered vertically vibrating beam supporting a tank partially filled with liquid, inside a vacuum chamber where the air pressure can be reduced. Results are presented with and without the tank and contained liquid, as well as under two different gas pressures (atmospheric and vacuum). When the liquid is absent from the tank, aerodynamic damping and added mass effects are quantified. When the tank is partially filled with liquid, the damping versus tank amplitude curves indicate differences that are mainly due to aerodynamic effects, with more noticeable effects in the 50% fill case. The results support the observation that at the density ratios presented here, two-phase liquid/ gas modelling may not be needed for the evaluation of net damping due to violent sloshing flows.

AB - Experimental data are presented for a cantilevered vertically vibrating beam supporting a tank partially filled with liquid, inside a vacuum chamber where the air pressure can be reduced. Results are presented with and without the tank and contained liquid, as well as under two different gas pressures (atmospheric and vacuum). When the liquid is absent from the tank, aerodynamic damping and added mass effects are quantified. When the tank is partially filled with liquid, the damping versus tank amplitude curves indicate differences that are mainly due to aerodynamic effects, with more noticeable effects in the 50% fill case. The results support the observation that at the density ratios presented here, two-phase liquid/ gas modelling may not be needed for the evaluation of net damping due to violent sloshing flows.

KW - Aerodynamic damping

KW - Cantilevered beam

KW - Vacuum

KW - Vertical sloshing

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DO - 10.1016/j.jsv.2023.118228

M3 - Article (Academic Journal)

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VL - 574

JO - Journal of Sound and Vibration

JF - Journal of Sound and Vibration

M1 - 118228

ER -

Experimental analysis of liquid vertical slosh damping at vacuum and atmospheric pressures

Abstract

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