Sloshing phenomenon is one of the major concerns in design of liquid storage tanks undergoing ground excitation. Reducing the sloshing and consequent environmental damages and economic losses can result in a safer and better design. To prevent such effects, obstacles like baffles can be placed in the oscillating liquid; fluid separation around baffles results in energy dissipation and reduction in sloshing amplitude and consequent hydrodynamic loads. The potential of baffles in increasing the hydrodynamic damping of sloshing in circular-cylindrical storage tanks is investigated in this study. Based on the widespread use of baffles in moving liquid containers especially in space vehicles, the ability of baffles in reducing the sloshing effects in storage tanks that are especially broader than fuel containers was under question. Concerning horizontal ring and vertical blade baffles, an estimation of hydrodynamic damping ratio of liquid sloshing in baffled tanks undergoing horizontal excitation has been developed analytically using Laplace's differential equation solution. This method involves the assessment of dissipated fraction of total sloshing oscillation energy, which is caused by the flow separation around the baffles. A series of experiments employing a tank model on a shake-table has been carried out to validate the theoretically predicted damping ratio. A parametric study showed that the ring baffles are more effective in reducing the sloshing oscillations.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Sloshing damping in cylindrical liquid storage tanks with baffles


    Additional title:

    Dämpfung der Schwappbewegung in zylindrischen Flüssigkeitstanks mit Schwalldämpfern


    Contributors:

    Published in:

    Journal of Sound and Vibration ; 311 , 1/2 ; 372-385


    Publication date :

    2008


    Size :

    14 Seiten, 18 Bilder, 15 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





    Analysis of flexible baffles for damping tank sloshing

    SCHWIND, R. / SCOTTI, R. / SKOGH, J. | AIAA | 1966


    Analysis of flexible baffles for damping tank sloshing.

    SCHWIND, R. G. / SCOTTI, R. S. | AIAA | 1967


    Sloshing in shallow cylindrical tanks

    Gupta, R.K. | Online Contents | 1995


    Sloshing of liquids in cylindrical tanks

    KUTTLER, J. R. / SIGILLITO, V. G. | AIAA | 1984