Liquid Sloshing Problem in a Concrete Rectangular LSS with a Vertical Baffle

Cheng, Xuansheng; Wei, Jing; Gong, Lijun

doi:10.1007/s13369-018-3376-y

Cited by 12 publications

(6 citation statements)

References 22 publications

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“…In order to suppress the adverse effect of liquid sloshing phenomena, internal baffles are used within partially filled containers as anti-sloshing devices in order to mitigate the intensity of liquid sloshing. Therefore, many researchers have numerically examined the importance of comprehending the influence of submerged baffle within the containers, which has significantly affected the dynamic behavior of liquid sloshing [2][3][4]. Also, many studies have investigated the influence of vertical baffles with different configurations on suppressing the sloshing pressure through an experimental method [5,6].…”

Section: Introductionmentioning

confidence: 99%

Effect of a Long-Duration Irregular Excitation on the Dynamic Behavior of a Vertically Baffled Base-Isolated Rectangular Fluid Container

Barik,

Biswal

2024

World Congress on Civil, Structural, and Environmental Engineering

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The dynamic behavior of a partially filled rectangular fluid container isolated by nonlinear hysteretic bearing is numerically investigated. The computational fluid domain with the presence of a submerged vertical baffle is modeled based on a velocity potentialbased Galerkin's finite element method. The competency of the developed model is verified with the existing results. A long-duration irregular harmonic motion is imposed for the time domain analysis. The results indicate that the isolation system has excellent adaptability for different tank-fluid-baffle configurations and is very effective in controlling critical dynamic responses of the fluid tank such as hydrodynamic base shear and sloshing amplitudes. The peak values of the hydrodynamic responses for base-isolated and non-isolated tanks are evaluated for different heights and widths of the submerged baffle, where the effect of change in h/d ratio has a significant impact on the variation in sloshing amplitude and base shear responses as compared to the change in w/L ratio. The application of base isolation reduces the sloshing amplitudes by 12 to 34% in different configurations of the baffle except at h/d=0.5. The base shear is also reduced by 2 to 48% in base-isolated tanks depending upon different baffle configurations. The isolator displacement is invariably found to be maximum when h/d=0.5, irrespective of the width of the baffle.

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Section: Introductionmentioning

confidence: 99%

Effect of a Long-Duration Irregular Excitation on the Dynamic Behavior of a Vertically Baffled Base-Isolated Rectangular Fluid Container

Barik,

Biswal

2024

World Congress on Civil, Structural, and Environmental Engineering

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“…Goudarzi and Sabbagh-Yazdi 27 made the assessment on effectivity of baffles in storage containers analytically. Cheng et al 28 acquired the sloshing response in a storage structure with baffle using a simplified calculation approach. Meng et al 29 obtained baffle impacts on vibrations of sloshing in a rectangular container.…”

Section: Introductionmentioning

confidence: 99%

Equivalent analytical model for liquid sloshing in a 2-D rectangular container with multiple vertical baffles by subdomain partition approach

Sun,

Meng,

Zhang

et al. 2024

Sci Rep

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An equivalent analytical model of sloshing in a two-dimensional (2-D) rigid rectangular container equipped with multiple vertical baffles is presented. Firstly, according to the subdomain partition approach, the total liquid domain is partitioned into subdomains with the pure interface and boundary conditions. The separation of variables is utilized to achieve the velocity potential for subdomains. Then, sloshing characteristics are solved according to continuity and free surface conditions. According to the mode orthogonality of sloshing, the governing motion equation for sloshing under horizontal excitation is given by introducing generalized time coordinates. Besides, by producing the same hydrodynamic shear and overturning moment as those from the original container-liquid-baffle system, a mass-spring analytical model of the continuous liquid sloshing is established. The equivalent masses and corresponding locations are presented in the model. The feasibility of the present approach is verified by conducting comparative investigations. Finally, by utilizing normalized equivalent model parameters, the sloshing behaviors of the baffled container are investigated regarding baffle positions and heights as well as the liquid height, respectively.

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“…They examine the impact of baffles on the rectangular LSTs' resonance frequency. Cheng et al [23] had already described the impact of a single perpendicular baffle blade on the dynamic hydrostatic forces of the rectangular LST in earthquake ground motions. The study was performed with the aid of the potential velocity function to be optimized the hydrodynamic pressure coefficient.…”

Section: Introductionmentioning

confidence: 99%

Passive Control in Baffled Liquid storage Tank under Bi-directional Earthquakes

et al. 2022

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A comprehensive study of a 3D baffled concrete liquid storage tank (LST) is conducted to find out the maximum reduction in responses of the LSTs under a set of important parametric variations. They include (i) the type of earthquake; (ii) the optimum position and number of coupled baffles (top-mounted and bottom supported); and (iii) the angle of incidence earthquakes. Further, the percentage reductions of different responses of interest for the optimum baffled LST are investigated. The numerical study is performed in ABAQUS software for a square LST of 6m X 6m X 4.8m having a water height of 3.6m. The response quantities include the maximum mean values of base shear, overturning moment, top board displacement, hydrodynamic pressure, and sloshing height. The results of the study show that (i) with the optimum arrangement of baffles, significant reduction of in the sloshing height can be achieved; (ii) the type of earthquake does not have significant effect response reductions; and (iii) both PGA and angle of incidence of the earthquake have a moderate effect on response reductions.

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Liquid Sloshing Problem in a Concrete Rectangular LSS with a Vertical Baffle

Cited by 12 publications

References 22 publications

Effect of a Long-Duration Irregular Excitation on the Dynamic Behavior of a Vertically Baffled Base-Isolated Rectangular Fluid Container

Effect of a Long-Duration Irregular Excitation on the Dynamic Behavior of a Vertically Baffled Base-Isolated Rectangular Fluid Container

Equivalent analytical model for liquid sloshing in a 2-D rectangular container with multiple vertical baffles by subdomain partition approach

Passive Control in Baffled Liquid storage Tank under Bi-directional Earthquakes

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