Experimental study on effect of density ratio and phase transition during sloshing impact in rectangular tank

Lee, Jeoungkyu; Ahn, Yangjun; Kim, Yonghwan

doi:10.1016/j.oceaneng.2021.110105

Cited by 10 publications

(3 citation statements)

References 9 publications

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“…The large density ratio in the compression cylinder is one of the specific features of the ionic liquid compressor because of the relatively high value in the liquid density and the extremely low density of the hydrogen gas. The density ratio is a key parameter when the sloshing phenomenon is in consideration [46], which, therefore, should be taken into account when designing the ionic liquid compressor. Moreover, Yong et al [47] argued that the settling of a particle in the static flow in the vertical channel is a challenging issue due to the complex interaction of the dynamic movement particle and the flow pattern.…”

Section: Introductionmentioning

confidence: 99%

Effects of Liquid Density on the Gas-Liquid Interaction of the Ionic Liquid Compressor for Hydrogen Storage

Guo

Wang

Geng³

et al. 2023

Energies

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As a new and promising compression technology for hydrogen gas, the ionic liquid compressor inherits the advantages of the ionic liquid and the hydraulic system. The liquid density is one of the key parameters influencing the fluid flow field, the sloshing of the bulk liquid, and the movement of droplets generated during the compressor operation. An appropriate selection of the liquid density is important for the compressor design, which would improve the thermodynamic performance of the compressor. However, the density of the ionic liquid varied significantly depending on the specific combination of the cation and anions. This paper proposed the methodology to select the optimal liquid density used in the ionic liquid compressor for hydrogen storage. The gas-liquid interaction in the compression chamber is analysed through numerical simulations under varied liquid density values. Results found that the increase in the liquid density promoted the detachment of the ionic liquid from the cylinder cover during the suction procedure and the contact of the bulk liquid on the compressor cover when the gas is compressed in the cylinder during the compression procedure. Both the droplet size and the dimension of the derived gas vortex decreased when the liquid density increased. The lowest mass transfer of hydrogen through the outlet was obtained at the density of 1150 kg/m3. The density of the ionic liquid from 1300 to 1450 kg/m3 is suggested to the hydrogen compressor, taking into account the transient two-phase flow characteristics, the mass transfer, and the total turbulent kinetic energy.

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Section: Introductionmentioning

confidence: 99%

Effects of Liquid Density on the Gas-Liquid Interaction of the Ionic Liquid Compressor for Hydrogen Storage

Guo

Wang

Geng³

et al. 2023

Energies

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“…When the tank filling is different, the tank sloshing can not only increase but also reduce the rolling motion response of the ship. Lee et al [8] carried out a model experiment to examine the effect of the difference between density ratio and phase transition on sloshing's impact. The results show that when external pressure is applied under boiling conditions, it is confirmed that liquefaction occurred inside the gas pocket and the compressibility of the gas is reduced so that not only the oscillation of the impact pressure is reduced, but the damping effect and pressure rise time also increased.…”

Section: Introductionmentioning

confidence: 99%

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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“…AlMashan et al 26 studied wave impacts on offshore jacket platforms under partial and full green water conditions. Lee et al 27 investigated the sloshing effect of water and NOVEC700 fluids, whose boiling point is 34°C, carrying out their experiment on the two fluids at various temperatures. They reported peak pressure, number of peaks, and pressure rise time to vary as a result of gas compressibility decaying due to liquefaction.…”

Section: Introductionmentioning

confidence: 99%

Wave impact on a rigid and flexible wall using various viscous fluids during sloshing

Korkmaz

2022

Proceedings of the Institution of Mechanical Engineers, Part M:

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This paper addresses a study of wave impacts on the chamfered shape of a structure during sloshing, using two different fluids through experimental analysis. Horizontal oscillations are carried out on the tank under various excitation frequencies at a fixed amplitude. Rigid and relatively flexible walls are considered for measuring pressure impact and structural deformation from the wave impacts. Various wave impulses are directed at the sidewall, and the structural deformations are discussed in detail. Wave impacts for various fluids are carried out, from which the pressure-time history, strain values, and free-surface deformation measurements are highlighted. Through the analysis, the breaking wave gets distorted by bottom chamfer at around the vertical portion of the wall. Therefore, physical results are changed likely to having with the wave strike the wall. The impact from more viscous fluids have also been found to reduce both the dynamic pressure and structural strain at practically the same rates in comparison with less viscous fluids.

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Experimental study on effect of density ratio and phase transition during sloshing impact in rectangular tank

Cited by 10 publications

References 9 publications

Effects of Liquid Density on the Gas-Liquid Interaction of the Ionic Liquid Compressor for Hydrogen Storage

Effects of Liquid Density on the Gas-Liquid Interaction of the Ionic Liquid Compressor for Hydrogen Storage

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

Wave impact on a rigid and flexible wall using various viscous fluids during sloshing

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