Physical Simulation of Mold Level Fluctuation Characteristics

Mold level fluctuations have an essential impact on slab quality control. In this study, the wave height and frequency of the fluctuations were analyzed using significant wave height and fast Fourier transform (FFT) in a water model of the mold. The mold flow field distribution was measured by parti...

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Bibliographic Details
Published in:Metallurgical and materials transactions. B, Process metallurgy and materials processing science Process metallurgy and materials processing science, 2023-10, Vol.54 (5), p.2591-2604
Main Authors: Wang, Zhendong, Shan, Qinglin, Gao, Yu, Pan, Hongwei, Lu, Boxun, Wen, Juwen, Cui, Heng
Format: Article
Language:English
Subjects:
Amplitudes
Characterization and Evaluation of Materials
Chemistry and Materials Science
Fast Fourier transformations
Fluid dynamics
Fourier transforms
Materials Science
Metallic Materials
Molds
Nanotechnology
Original Research Article
Particle image velocimetry
Physical simulation
Quality control
Structural Materials
Surfaces and Interfaces
Thin Films
Wave height
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Summary:Mold level fluctuations have an essential impact on slab quality control. In this study, the wave height and frequency of the fluctuations were analyzed using significant wave height and fast Fourier transform (FFT) in a water model of the mold. The mold flow field distribution was measured by particle image velocimetry (PIV), and the correlation effect between flow field, wave height, and frequency is discussed. The results show that the frequency change of the fluctuations is mainly influenced by the wavelength. The distance between the position of the vortex center and the narrow face of the mold (NF) increases, the travel of the surface liquid mass point increases, and the wavelength of the generated wave becomes longer, resulting in a decrease in frequency. Increasing the surface velocity will promote the overall fluctuations and have a greater impact on the liquid mass point in the fluctuation generating area, thus making the NF amplitude significantly higher. After entering the fluctuation decay area, the amplitude gradually decreases. Waves with frequencies below 0.1 Hz have the largest amplitude variation and are the most important frequency affecting the fluctuation variation. The maximum main frequency may be spontaneously generated.
ISSN:1073-5615
1543-1916
DOI:10.1007/s11663-023-02860-y