A CA-LBM model for simulating dendrite growth with forced convection

Meng, Xiang‐Guo; Cui, Lei; Shi, Yi-han; Zhu, Miaoyong

doi:10.1007/s42243-021-00587-1

Cited by 8 publications

(3 citation statements)

References 36 publications

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“…Solute transport is a phenomenon that is very flow dependent and can have effects on the development of the dendrites under well-defined thermal conditions. Effects on dendrite spacing and symmetry have been notably studied [183,184]. Wang et al [55] were able to utilize a CA-FD model to simulate a controlled solute diffusion in the solidification of a binary alloy.…”

Section: Solute Transport and Segregationmentioning

confidence: 99%

A Review of Large-Scale Simulations of Microstructural Evolution during Alloy Solidification

Cusato,

Nabavizadeh,

Eshraghi

2023

Metals

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During the past two decades, researchers have shown interest in large-scale simulations to analyze alloy solidification. Advances in in situ X-ray observations of the microstructural evolution of dendrites have shown defects that can be very costly for manufacturers. These simulations provide the basis for understanding applied meso-/macro-scale phenomena with microscale details using various numerical schemes to simulate the morphology and solve for transport phenomena. Methods for simulating methodologies include cellular automaton, phase field, direct interface tracking, level set, dendritic needle networks, and Monte Carlo while finite element, finite difference, finite volume, and lattice Boltzmann methods are commonly used to solve for transport phenomena. In this paper, these methodologies are explored in detail with respect to simulating the dendritic microstructure evolution and other solidification-related features. The current research, from innovations in algorithms for scaling to parallel processing details, is presented with a focus on understanding complex real-world phenomena. Topics include large-scale simulations of features with and without convection, columnar to equiaxed transition, dendrite interactions, competitive growth, microsegregation, permeability, and applications such as additive manufacturing. This review provides the framework and methodologies for achieving scalability while highlighting the areas of focus that need more attention.

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Section: Solute Transport and Segregationmentioning

confidence: 99%

A Review of Large-Scale Simulations of Microstructural Evolution during Alloy Solidification

Cusato,

Nabavizadeh,

Eshraghi

2023

Metals

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“…Moreover, the model of thermal conductivity of continuous casting slab was improved. In the case of determining the temperature field distribution, many simulation methods have been applied to the analysis and optimisation of solidified structures [17][18][19][20]. The phase field (PF) method [21,22] has a small computational domain, making it difficult to reproduce the simulated solidification behavior of continuous casting at full-scale conditions.…”

Section: Introductionmentioning

confidence: 99%

Improved temperature and grain size consistency of continuous cast slabs through cooling spray regulation

Sheng

Meng

2023

Ironmaking & Steelmaking

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The consistency of temperature and grain size is crucial to the quality of the continuous casting slab. In order to study the temperature and grain size of the continuous casting slab as influenced by the cooling spray state, a cellular automatic finite element (CAFE) coupled model was developed. The model was validated by low magnification inspection and infrared temperature measurement. The process of continuous casting was simulated by numerical model. Temperature and grain size distribution in the transverse direction of the continuous casting slab can be controlled by adjusting the nozzle arrangement. The effect of different nozzle positions on the temperature field distribution in the second cooling zone of continuous casting was simulated. The optimal nozzle position was selected with the temperature distribution uniformity as the important index. When the optimized nozzle arrangement is selected, the transverse temperature and grain size of the continuous casting slab are more uniform.

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“…In recent years, numerous simulation methods have been applied to analyze and optimize the microstructure growth of the solidification process. [1][2][3][4][5][6][7] Phase-field methods [8][9][10][11][12][13] have minimal computational domains, which hinder the reproduction of the simulated solidification behavior of continuous casting at full size. Monte Carlo methods [14,15] describe the macrostructure of the casting based on an assumed nucleation behavior.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Solidification Structures Influenced by Cooling Spraying and Process Parameters Based on Cellular Automaton Finite‐Element Model

Sheng

Meng

et al. 2023

steel research int.

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A cellular automaton finite‐element coupling model is developed to investigate the influences of the solidification structure of a continuous casting slab by the state of the cooling spray and process conditions. The model is validated. The solidification structure is simulated for different cooling spray schemes, superheat degrees, and casting speeds. The grain growth and distribution of the continuous casting slab near the corner area are sensitive to the cooling spray. As the distance of the nozzle from the surface of the continuous casting slab increases, the radii of the columnar and equiaxed grains tend to increase near the corners. The distribution of a columnar‐to‐equiaxed grain transition near the corner area gradually moves toward the core of the slab as the distance of the nozzle from the continuous casting slab decreases. At a casting speed of 1.2 m min−1 and superheat degree of 20 °C, the best nozzle height from the surface of the continuous casting billet is 234.5 mm. The casting speed and superheat significantly affect the grain radius. With the increase in the casting speed and decrease in the degree of superheat, the average grain radius decreases, while the equiaxed grain area increases.

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A CA-LBM model for simulating dendrite growth with forced convection

Cited by 8 publications

References 36 publications

A Review of Large-Scale Simulations of Microstructural Evolution during Alloy Solidification

A Review of Large-Scale Simulations of Microstructural Evolution during Alloy Solidification

Improved temperature and grain size consistency of continuous cast slabs through cooling spray regulation

Numerical Simulation of Solidification Structures Influenced by Cooling Spraying and Process Parameters Based on Cellular Automaton Finite‐Element Model

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