Sloshing dynamics of shallow water tanks: Modal characteristics of hydraulic jumps

Gurusamy, Saravanan; Sanapala, V.S.; Kumar, Deepak; Patnaik, B.S.V.

doi:10.1016/j.jfluidstructs.2021.103322

Cited by 18 publications

(2 citation statements)

References 23 publications

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“…The conditions are shown in Table 1 and the filling levels are 30% and 50%, respectively. The amplitude of 0.03 m is selected, which refers to the medium excitation amplitude A/B = 0.023 and the large excitation amplitude A/B = 0.047 17 . The theoretical first-order natural frequencies of the sloshing liquid in clean tank are selected as the excitation frequencies, which can be obtained by equation (15).…”

Section: Anti-sloshing Effect Of the Hanging Porous Partmentioning

confidence: 99%

Numerical investigation of anti-sloshing performance of hanging porous part in rectangular tank

Wang¹,

Zou

Yuan³

et al. 2022

Third International Conference on Computer Science and Communication Technology (ICCSCT 2022)

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As a non-negligible problem, the suppression of sloshing is very important for liquid storage carriers such as LNG (Liquefied Natural Gas) ships. The effective suppression of impact pressure caused by sloshing liquid improves the safety of the structure. In this paper, the porosity characteristic is combined with the adjustable hanging part, and the effects of this composite anti-sloshing method on sloshing states are studied by CFD (Computational Fluid Dynamics). The results show that, compared with the traditional solid part, the composite method with appropriate porosity can further suppress the sloshing, and the load acting on the hanging porous part induced by the sloshing liquid is smaller. When the porous part near the static free surface moves downward, the damping effect enhances, leading to further improvement of the antisloshing effect, but the load acting on the part increases.

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Section: Anti-sloshing Effect Of the Hanging Porous Partmentioning

confidence: 99%

Numerical investigation of anti-sloshing performance of hanging porous part in rectangular tank

Wang¹,

Zou

Yuan³

et al. 2022

Third International Conference on Computer Science and Communication Technology (ICCSCT 2022)

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“…Gurusamy and Kumar (2020) conducted the laboratory measurement for the hysteresis of the liquid sloshing in rectangular and sloping bottom tanks in the condition that the ratio of the water depth to the tank length is 0.038. The modal characteristics of hydraulic jumps in the sloshing flow of shallow water depth were further investigated in Gurusamy et al (2021). Liu et al (2022) estimated the influence of the length scale on the Kelvin-Helmholtz instabilities by using the critical Richardson number.…”

Section: Introductionmentioning

confidence: 99%

Hysteresis phenomenon of the sloshing-mode resonance in a moonpool induced by rolling motion excitations

Jiang,

Bai,

2024

Physics of Fluids

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Sloshing-mode resonance in the moonpool induced by roll motion excitations is investigated numerically using the OpenFOAM® package. Nonlinear characteristics of the sloshing-mode resonance are the main focus of the present study. When the roll motion excitation has a time-invariant amplitude, a typical softening spring behavior can be observed in the variation of free surface amplitude against the excitation frequency, including the decreased resonant amplitude and the jump frequency. Furthermore, the dimensionless jump frequency is independent of the moonpool breadth and draft in this situation. The hysteresis phenomenon is clearly observed under the roll excitation with varying amplitudes, where the phase locked-in mechanism is the essential reason for this phenomenon. The hysteresis loop is located between two jump frequencies by the accelerating and decelerating excitations that generate the lower and upper branches, respectively. With the increase in moonpool breadth, the decreased upper branch frequency and unchanged lower branch frequency are observed, leading to the increased region of the hysteresis loop. The variation of the moonpool draft has an insignificant effect on the region of the hysteresis loop.

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The 2D Rectangular Tank Sloshing Response Under the Planar Tilt Settlement

Jia

Jin²,

Lou³

et al. 2022

Mechanisms and Machine Science

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Sloshing dynamics of shallow water tanks: Modal characteristics of hydraulic jumps

Cited by 18 publications

References 23 publications

Numerical investigation of anti-sloshing performance of hanging porous part in rectangular tank

Numerical investigation of anti-sloshing performance of hanging porous part in rectangular tank

Hysteresis phenomenon of the sloshing-mode resonance in a moonpool induced by rolling motion excitations

The 2D Rectangular Tank Sloshing Response Under the Planar Tilt Settlement

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