Lateral Sloshing Analysis by CFD and Experiment for a Spherical Tank

Kim, Gui Jin; Rhee, Hyug-Gyo; Jeon, Wan Ho; Jeong, Ju-Won; Hwang, Do-Soon

doi:10.1007/s42405-020-00295-2

Cited by 11 publications

(5 citation statements)

References 6 publications

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“…Under these conditions, it is possible to use the equivalent mechanical model shown in Figure 1a, which takes into account the motion of the fluid directly proportional to the acceleration of the rigid container, described by a mass m 0 integral to the container, and the superposition of j different modes of oscillation described using a series of simple pendulums in which the remaining mass of fluid is concentrated, linearized to the vertical position [20]. In (1), from the linear wave theory obtained by the linearization of the Navier-Stokes equations, the equation of the natural frequency ω n of the j-th oscillation mode has been derived: The dependence of the damping coefficient σ j of the j-th mode of oscillation on the internal forces of the system means that σ j can be calculated by observing how the wave motion decreases according to a logarithmic decay due to the dissipation of energy. In addition, only the first asymmetric mode was considered because it is dominant over higher modes.…”

Section: Methodsmentioning

confidence: 99%

“…The first studies on sloshing began in the 1960s when NASA began to use liquid fuels in their rockets. The inertial effects of a fluid and the gradual emptying of the tanks, with the consequent increase in the wave motion, created severe problems of stability and control of the trajectories during the launches of the rockets [1,2]. Given the low capacity of computing systems, simplified models were developed, derived mainly from experimental activities, able to capture the phenomenon for specific fields of application [3].…”

Section: Introductionmentioning

confidence: 99%

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Multibody Analysis of Sloshing Effect in a Glass Cylinder Container for Visual Inspection Activities

De Simone,

Veneziano,

Pace

et al. 2024

Applied Sciences

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This paper addresses the phenomenon of sloshing and the issues that arise during liquid handling at visual inspection stations. The pharmaceutical industry, recently put under pressure by the pandemic, has long adopted modular solutions consisting mainly of robotic islands. This work focuses on a visual inspection island for glass vials and ampules called VRU. This machine uses robotic arms to optimize the inspection process and enables automated control of a wide range of products using image recognition techniques and AI algorithms. However, the handling of containers in the presence of liquids requires special precautions to avoid the occurrence of bubbles inside the fluid that can prevent the cameras from correctly capturing any defects present. The banal solution involves a drastic reduction in the speeds and accelerations to which the liquids are subjected. However, using appropriate techniques makes it possible to achieve performance values similar to those obtainable when manipulating solid materials. The developed algorithms were tested using multibody simulations in the Mathworks Simscape environment and then validated using a six-axis Fanuc robot. In this study, however, the analysis conducted aimed to determine the correlations between trajectories, laws of motion, and sloshing in containers handled at high speed in industrial applications. In this study a multibody model was developed using a CFD analysis. The container consisted of a glass vial for pharmaceutical uses containing a liquid inside. The results obtained from the CFD analysis allowed us to calibrate the multibody model for the next phase of optimization of the laws of motion to be followed by the manipulator.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multibody Analysis of Sloshing Effect in a Glass Cylinder Container for Visual Inspection Activities

De Simone,

Veneziano,

Pace

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…With the advancement in computer hardware and software technology, CFD solutions have become easier to solve with closer to real-net values. Frosinia, Zhang, Enhui, Ren He, and Kim (Frosina et al, 2018;Kim et al, 2020;Zhang and He, 2020) have individually done research on different tank designs accompanied by different shapes, sizes, and designs of baffles. But to the best of the authors' knowledge, very little work has been carried out for the design and analysis of steel fuel tanks for military off-road vehicles.…”

Section: Literature Reviewmentioning

confidence: 99%

Comprehensive design and analysis of a 300L steel fuel tank for heavy off-road vehicles: numerical and experimental insights

Verma,

Shankar,

Malik Shaik

et al. 2024

Front. Mech. Eng.

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Introduction: This study presents a comprehensive design and analysis of a 300L steel fuel tank intended for heavy off-road vehicles. The design process integrates numerical simulations and experimental investigations to optimize the tank's performance and durability under various operating conditions.Methods: The design methodology involves CAD model optimization, numerical analysis setup, and experimental validation. CAD model optimization simplifies the tank geometry while retaining structural integrity. Numerical analysis setup includes defining boundary conditions, meshing strategies, and simulation parameters. Experimental validation entails testing the tank under dynamic loading conditions to assess its structural response.Results: Numerical simulations reveal insights into stress distribution, deformation behavior, and fluid dynamics within the tank. Experimental tests confirm the numerical predictions and provide valuable data for model validation. Key results include stress concentrations in critical areas, deformation patterns under different loading conditions, and fluid flow characteristics.Discussion: The integrated approach combining numerical simulations and experimental tests offers a comprehensive understanding of the fuel tank's behavior. Findings highlight areas for design improvement, such as reinforcement of stress-prone regions and optimization of fluid flow dynamics. The study contributes to enhancing the performance, reliability, and safety of fuel tanks for heavy off-road vehicles.

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“…Different baffle structures will have a great difference in the results of sloshing [13] . The change of liquid depth in the tank will also impact the sloshing results [14] .…”

Section: Introductionmentioning

confidence: 99%

The characteristics of porous baffles reducing the impact load of liquid nonlinear sloshing

Shen

Sun

Tong

et al. 2023

J. Phys.: Conf. Ser.

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The study aims to explore the characteristics of the impact load of a ship under the influence of a harsh marine environment. The horizontal excitation test platform is established to analyze the response law of the external excitation frequency of the sloshing load. Moreover, nonlinear liquid sloshing impact load characteristics are analyzed under porous baffling with different solids ratios and tanks with different liquid depths. It is found that the resonance frequency of the tank without baffling is 0.93ω 0, and that of the tank with a porous baffle is 0.96ω0. With the solid ratios of 0.4 to 0.8, the transient and steady state pressure peaks decrease by 66% and 71%, respectively. The liquid depths of H to H/4, for both transients and steady state pressure peaks, decreased by about 36%. It shows that the resonant frequency is closer to the natural frequency when the amplitude of liquid sloshing is reduced. When the solid ratio is smaller or the liquid depth increases, the impact load of liquid on the wall is stronger, and the double peak of impact load is more obvious. This provides a reference for the engineering design of the liquid tank and the study of fluid sloshing damping.

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Lateral Sloshing Analysis by CFD and Experiment for a Spherical Tank

Cited by 11 publications

References 6 publications

Multibody Analysis of Sloshing Effect in a Glass Cylinder Container for Visual Inspection Activities

Multibody Analysis of Sloshing Effect in a Glass Cylinder Container for Visual Inspection Activities

Comprehensive design and analysis of a 300L steel fuel tank for heavy off-road vehicles: numerical and experimental insights

The characteristics of porous baffles reducing the impact load of liquid nonlinear sloshing

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