Study on tank shape for sloshing assessment of LNG vessels under unrestricted filling operation

Park, Jong-Jin; Kim, Sangjin; Kim, Yonghwan; Seo, Jang-Hoon; Jin, Chang-Hun; Joh, Kihun; Kim, Byung-Woo; Suh, Yong-Suk

doi:10.1007/s00773-015-0318-1

Cited by 10 publications

(4 citation statements)

References 5 publications

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“…Liquid sloshing in fuel tanks is common phenomenon in ship navigation, which adversely affects the stability of the vessel and poses a threat to human safety [1][2][3][4]. With the increasing demand for liquefied natural gas (LNG) and liquefied petroleum gas (LPG), there has been a rapid development in large-scale liquid cargo ships.…”

Section: Introductionmentioning

confidence: 99%

Study on the Damping Effect and Mechanism of Vertical Slotted Screens Based on the BM-MPS Method

Zhang

Wang

2023

JMSE

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Liquid sloshing is a common phenomenon in ocean engineering, and one which not only affects the stability of ship navigation, but also poses a threat to both the marine environment and human life. Ascertaining how best to reduce the amplitude of liquid sloshing has always been a key problem in ocean engineering. In this study, based on an improved moving-particle semi-implicit method, the BM-MPS method, the damping effect of a vertical slotted screen under rotation excitation was simulated and studied, and the influence of baffle porosity and the rotation amplitude on the resonance period and impact pressure was discussed. The results showed that the porosity had an obvious effect on the resonance period. A significant resonance period transformation happened when the porosity was 0.1, but a porosity of 0.15 was the point at which the maximum impact pressure in the resonance was at its minimum. Meanwhile, the impact duration curve was related to porosity. With the increasing of porosity, the impact duration curve changed from having no peak to a single peak, and then to double peak. In addition, the amplitude of rotation excitation was also one of the factors that affected the resonance period.

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Section: Introductionmentioning

confidence: 99%

Study on the Damping Effect and Mechanism of Vertical Slotted Screens Based on the BM-MPS Method

Zhang

Wang

2023

JMSE

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“…The liquid in the tank may move violently when the filling level of the LNG ship is between 10%-70%. Especially in the low filling level of about 30%, the sloshing liquid will have a great impact on the structure 1 . Where the frequency of the external excitation approximates the natural frequency of the liquid in the tank, the strong impact will threaten the safety of the structure or even destroy the local structure 2 .…”

Section: Introductionmentioning

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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“…1 The GTT company in France requires that the filling level of the thin film LNG vessel should not be in range of 10%-70%. 2 For marine structures, sloshing has potential risks to the structural safety of the tank wall. Periodic impact sloshing load acting on tank wall is easy to cause fatigue damage, and on the other hand, violent impact pressure is easy to cause structural damage when liquid resonates in the tank.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of sloshing pressure distribution in a rectangular tank

Wang

Zou

Zhu

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part M:

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To clarify distribution characteristics of impact pressure induced by sloshing along the rectangular tank wall and predict the vertical position where the maximum pressure appears, this paper uses VOF method and dynamic mesh technique to simulate the sloshing in the rectangular tank and analyze the sloshing pressure under different conditions. The results show that the vertical position of the maximum sloshing pressure decreases with the increase of the impact strength when liquid does not impact the roof of the tank. The vertical position of the maximum sloshing pressure decreases with the increase of the excitation amplitude. The relationship between the vertical position of the maximum sloshing pressure and the excitation frequency presents parabola-like characteristics and the parabola opens up, which means the vertical position has the minimum value with the change of the excitation frequency, and the minimum of the vertical position occurs when the liquid in the tank near the resonance state. It also shows that the maximum sloshing pressure does not always appear at the static free surface corresponding to different filling levels. Instead, it is distributed regionally as the filling level changes.

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Study on tank shape for sloshing assessment of LNG vessels under unrestricted filling operation

Cited by 10 publications

References 5 publications

Study on the Damping Effect and Mechanism of Vertical Slotted Screens Based on the BM-MPS Method

Study on the Damping Effect and Mechanism of Vertical Slotted Screens Based on the BM-MPS Method

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

Numerical investigation of sloshing pressure distribution in a rectangular tank

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