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Dependence of critical filling level on excitation amplitude in a rectangular sloshing tank

机译：临界液位与矩形晃荡罐激发振幅的关系

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摘要

A series of experiments has been conducted to investigate the fluid sloshing at the first mode (i.e. half wavelength exists inside the tank) for different filling levels in a rectangular tank. For each filling level, fluid sloshing was driven by forced tank motions in the horizontal plane with excitation amplitudes of 0.127 cm, 0.254 cm, 0.508 cm and 0,635 cm, respectively. Pressure variations on the side wall of the tank and wave elevation inside the tank were measured simultaneously using four pressure sensors and a wave gauge. It was found that the filling level at which the maximum sloshing amplitude occurs, namely the critical filling level, decreases as the excitation amplitude increases. A theoretical analysis was conducted to provide a physical explanation for this trend. It was also found that an increase in the damping of the system leads to a shift of the critical filling level to a higher value. The pressure on the tank sidewall is found to correlate well with the response amplitude of the water level in the tank since small excitation amplitudes were used in this study.
机译：已经进行了一系列实验以研究在矩形罐中不同填充水平下在第一模式（即罐中存在一半波长）下的流体晃动。对于每个填充液位，流体的晃动是由水箱在水平面中的强制运动引起的，其激励幅度分别为0.127 cm，0.254 cm，0.508 cm和0.635 cm。使用四个压力传感器和一个波形仪同时测量了储罐侧壁上的压力变化和储罐内的波高。已经发现，随着激励幅度的增加，最大晃动幅度发生的填充水平，即临界填充水平，降低了。进行了理论分析，为这一趋势提供了物理解释。还发现，系统阻尼的增加导致临界填充水平向更高的值移动。由于在本研究中使用了较小的激励幅度，因此，发现罐侧壁上的压力与罐中水位的响应幅度具有很好的相关性。

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  • 来源
    《Ocean Engineering》 |2018年第may15期|500-511|共12页
  • 作者

    Lu Yucen; Zhou Tongming; Cheng Liang; Zhao Wenhua; Jiang Hongyi;

  • 作者单位

    Univ Western Australia, Sch Civil Environm & Min Engn, 35 Stirling Highway, Crawley, WA 6009, Australia;

    Univ Western Australia, Sch Civil Environm & Min Engn, 35 Stirling Highway, Crawley, WA 6009, Australia;

    Univ Western Australia, Sch Civil Environm & Min Engn, 35 Stirling Highway, Crawley, WA 6009, Australia;

    Univ Western Australia, Ctr Offshore Fdn Syst, 35 Stirling Highway, Crawley, WA 6009, Australia;

    Univ Western Australia, Sch Civil Environm & Min Engn, 35 Stirling Highway, Crawley, WA 6009, Australia;

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  • 正文语种 eng
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  • 关键词

    Sloshing; Critical filling level; Excitation amplitude; First mode; Pressure;

    机译：晃动;临界液位;激励幅度;第一模式;压力;

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