A hybrid method for ship response coupled with sloshing in partially filled tanks

Lyu, Wenjing; Riesner, Malte; Peters, A.; Moctar, Ould el

doi:10.1016/j.marstruc.2019.102643

Cited by 19 publications

(6 citation statements)

References 12 publications

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“…Thus, the sloshing has little influence on the heave motion of the ship. The result is similar to research by a hybrid method [30] for a ship's response coupled with sloshing.…”

Section: Discussionsupporting

confidence: 82%

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CFD Simulation and Experimental Study on Coupled Motion Response of Ship with Tank in Beam Waves

Feng

Liu

et al. 2022

JMSE

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Tank sloshing is widely present in many engineering fields, especially in the field of marine. Due to the trend of large-scale liquid cargo ships, it is of great significance to study the coupled motion response of ships with tanks in beam waves. In this study, the CFD (Computational Fluid Dynamics) method and experiments are used to study the response of a ship with/without a tank in beam waves. All the computations are performed by an in-house CFD solver, which is used to solve RANS (Reynold Average Navier-Stokes) equations coupled with six degrees-of-freedom solid-body motion equations. The Level Set Method is used to solve the free surface. Verification work on the grid number and time step size has been conducted. The simulation results agree with the experimental results well, which shows that the numerical method is accurate enough. In this paper, several different working conditions are set up, and the effects of the liquid height in the tank, the size of the tank and the wavelength ratio of the incident wave on the ship’s motion are studied. The results show the effect of tank sloshing on the ship’s motion in different working conditions.

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“…Thus, the sloshing has little influence on the heave motion of the ship. The result is similar to research by a hybrid method [30] for a ship's response coupled with sloshing.…”

Section: Discussionsupporting

confidence: 82%

“…Thus, the sloshing has little influence on the heave motion of the ship. The result is similar to research by a hybrid method [30] for a ship's response coupled with sloshing. As can be seen from Figure 19, when the time is 3.08 s, the ship motion has little influence on the wave pattern.…”

Section: Effect Of Fill Levels Inside the Tanksupporting

confidence: 82%

CFD Simulation and Experimental Study on Coupled Motion Response of Ship with Tank in Beam Waves

Feng

Liu

et al. 2022

JMSE

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“…Armenio et al [6,7] and Li et al [8] independently developed coupled numerical models based on computational fluid dynamics (CFD) for the coupled effects. After Li et al [8], many studies have been conducted on this topic in recent years (e.g., Huang et al [9], Taskar et al [10], Jiang et al [11], Cercos-Pita et al [12], Ghamari et al [13], Saripilli and Sen [14], Bulian and Cercos-Pita [15], Diebold et al [16], Alujević et al [17], Lyu et al [18], Zhuang and Wan [19], Alujević et al [20], Subramanian et al [21], Wei et al [22], Bernal-Colio et al [23], Liu et al [24], Yao et al [25], He et al [26], Lin et al [27], Liu et al [28], Lyu et al [29], Sun et al [30], Wen et al [31], Yu et al [32], Chen et al [33], Chen et al [34], Ge et al [35], Kapsenberg and Carette [36], Lee et al [37], Lin et al [38], and Wang et al [39]). However, the dynamics of the ships and floating caissons are different.…”

Section: Introductionmentioning

confidence: 99%

Development of Coupled Numerical Model between Floating Caisson and Anti-Oscillation Tanks

Shirai,

Nakamura,

Cho

et al. 2023

JMSE

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Floating caissons can oscillate owing to ocean waves when towed to an installation site. To reduce these oscillations, free-surface anti-oscillation tanks mounted on floating caissons have been proposed. However, no coupled numerical model exists between the motion of the floating caisson and fluid flow in the tanks based on computational fluid dynamics (CFD). In this study, a coupled model is developed and compared to existing physical experiments for validation. In the coupled model, the vertical and rotational motion of the floating caisson are computed as a rigid body, and the motion of the free water in the tank is computed using a CFD model. Numerical results show the predictive capability of the coupled model in terms of the rotational motion (pitch) of the floating caisson within ±20% of experimental data, regardless of the absence or presence of water in the tank. The numerical results also show that the fluid flow with complex air–water interface motion in the tank can be analyzed in detail using the coupled model. This suggests that the coupled model developed in this study is a useful tool for quantitatively assessing the effectiveness of an anti-oscillation tank for reducing the pitch of a floating caisson.

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“…They found that the coupling effect shifts the motion frequencies and induces the nonlinear motion amplitudes. Lyu et al [4] compared the potential-flow and Navier-Stokes models. They concluded that the sloshing fluid can significantly influence the ship's surge and roll motions but hardly affects the heave motion.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Porous Media on Wave-Induced Sloshing in a Floating Tank

Tsao

Chen²,

Kees³

et al. 2022

Applied Sciences

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Placing porous media in a water tank can change the dynamic characteristics of the sloshing fluid. Its extra damping effect can mitigate sloshing and, thereby, protect the integrity of a liquefied natural gas tank. In addition, the out-of-phase sloshing force enables the water tank to serve as a dynamic vibration absorber for floating structures in the ocean environment. The influence of porous media on wave-induced sloshing fluid in a floating tank and the associated interaction with the substructure in the ambient wave field are the focus of this study. The numerical coupling algorithm includes the potential-based Eulerian–Lagrangian method for fluid simulation and the Newmark time-integration method for rigid-body dynamics. An equivalent mechanical model for the sloshing fluid in a rectangular tank subject to pitch motion is proposed and validated. In this approach, the degrees of freedom modeling of the sloshing fluid can be reduced so the numerical computation is fast and inexpensive. The results of the linear mechanical model and the nonlinear Eulerian–Lagrangian method are correlated. The dynamic interaction between the sloshing fluid and floating body is characterized. The effectiveness of the added porous media in controlling the vibration and mitigating the sloshing response is confirmed through frequency response analysis.

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A hybrid method for ship response coupled with sloshing in partially filled tanks

Cited by 19 publications

References 12 publications

CFD Simulation and Experimental Study on Coupled Motion Response of Ship with Tank in Beam Waves

CFD Simulation and Experimental Study on Coupled Motion Response of Ship with Tank in Beam Waves

Development of Coupled Numerical Model between Floating Caisson and Anti-Oscillation Tanks

The Effect of Porous Media on Wave-Induced Sloshing in a Floating Tank

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