Numerical Simulation of Liquid Drop Deposition in Annular-Mist Flow Regime of Boiling Water Reactor

Xie, Huimin; Koshizuka, Seiichi; Oka, Yoshiaki

doi:10.1080/18811248.2004.9715520

Cited by 31 publications

(4 citation statements)

References 32 publications

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“…Several other studies have employed volume of fluid and level set methods to study the entrainment processes and the deposition processes [16][17][18][19], as well as the liquid film features and interfacial wave development [20][21][22][23][24][25][26]. Additional studies have investigated the droplet characteristics using different methods, such as Lagrangian framework [13,27,28], the lattice Boltzmann method [29], and the population balance method [30]. In this study, we mainly focus on the findings from previous experimental studies.…”

Section: Review Of Previous Experimental Studiesmentioning

confidence: 99%

Modeling Liquid Droplet Sizes in Gas–Liquid Annular Flow

Karatayev,

Fan

2024

Energies

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Understanding droplet sizes is crucial for modeling gas–liquid annular flow and has many applications across various industries. This paper presents a comprehensive review and analysis of experimental data on droplet-size characteristics in gas–liquid annular flow from the open-source literature. The existing models for droplet-size predictions are evaluated against experimental data. Based on the data analysis, we propose two new correlations to predict the maximum droplet diameter and Sauter mean droplet diameter. Model evaluation and parametric study show that the new correlations capture the effects of fluid properties and flowing conditions on the droplet diameters well, outperforming other existing models. The average absolute relative errors are reduced to 14.8% and 29% for the maximum droplet diameter and the Sauter mean droplet diameter, respectively.

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Section: Review Of Previous Experimental Studiesmentioning

confidence: 99%

Modeling Liquid Droplet Sizes in Gas–Liquid Annular Flow

Karatayev,

Fan

2024

Energies

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“…Single-droplet impingement on fuel rods was analyzed to discuss the deposition process in BWR cores. [35][36][37][38] It was shown that splashing and subsequent reentrainment were likely to occur when the droplet speed was high. In other studies, stability of liquid film flow on the fuel rods and droplet entrainment were analyzed.…”

Section: Two-phase Flow Analysis In Reactor Coresmentioning

confidence: 99%

Current Achievements and Future Perspectives on Particle Simulation Technologies for Fluid Dynamics and Heat Transfer

Koshizuka

2011

J. Nucl. Sci. Technol.

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The Moving Particle Semi-implicit (MPS) method is one of the particle methods in which continuum mechanics is analyzed using the concept of particles. Since meshes are not used, large deformation of free surfaces and material interfaces can be simulated without the problems of mesh distortion. Thus, the MPS method has been applied to multiphase flow analysis in nuclear engineering. The advantages of the particle methods are also useful for applications in other engineering fields: ship engineering, civil engineering, microflow, biomechanics, visualization, etc. In this review, calculation examples are described and classified. Commercial codes have been released and applied in industries. The particle methods are also used in TV programs, movies, and computer games. Combinations of numerical techniques for multiphysics problems, fast calculations, and high-quality visualizations are expected to lead to real-time particle simulations for various new applications in the near future.

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“…On the other hand, numerical simulations are performed as well primarily to realize the crown and splash formations using VOF [5] and MPS [6] methods, however, quite a few studies were capable of simulating the consequent formation of the Worthington jet. This is basically due to the difficulties in catching the fast-moving interface with a large curvature in mesh-based methods, or in the proper representation of the surface tension in particle-based methods besides the system size requirement.…”

Section: N Nishio Et Almentioning

confidence: 99%

Large‐scale SPH simulations of droplet impact onto a liquid surface up to the consequent formation of Worthington jet

Nishio

Yamana

Yamaguchi

et al. 2010

Numerical Methods in Fluids

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SUMMARYIn this study, the whole process of liquid droplet impact onto a liquid surface up to the consequent formation of the central column was simulated using the smoothed particle hydrodynamics method (SPH), and compared with an experiment using a high-speed video camera. The surface tension tensor for the particle-based expression was adequately included as the gradient of the surface tension and that enabled the simulation leading to the formations of crater and crown as well as the consequent central column. The simulated time series of the crater depth and diameter and crown height corresponded quantitatively well with the experimental result up to the rebound motion while discrepancies remained as a lower central column height in the simulation, and this seemed to be ascribed to the difficulty in realizing the complex surface structure that inevitably appeared in the fast rebound motion.

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Numerical Simulation of Liquid Drop Deposition in Annular-Mist Flow Regime of Boiling Water Reactor

Cited by 31 publications

References 32 publications

Modeling Liquid Droplet Sizes in Gas–Liquid Annular Flow

Modeling Liquid Droplet Sizes in Gas–Liquid Annular Flow

Current Achievements and Future Perspectives on Particle Simulation Technologies for Fluid Dynamics and Heat Transfer

Large‐scale SPH simulations of droplet impact onto a liquid surface up to the consequent formation of Worthington jet

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