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<p>Image processing techniques were employed to analyze the ink dispersion process in a tundish water model, providing quantitative parameters to evaluate fluid flow dynamics. Key parameters, including filling time, dead area fraction, area emptying time, peak concentration time, dead concentration fraction, and concentration emptying time, were introduced. Orthogonal tests were conducted to investigate the effects of dam spacing, height, and openings on tundish flow behavior. Results revealed that the dam spacing of 3760&#xa0;mm yielded the shortest filling and peak concentration time, while the 4760 mm spacing minimized dead area and concentration fractions. Taller dams (620&#xa0;mm) reduced dead area fractions but extended peak concentration time. Dams with openings demonstrated improved flow dynamics, reducing both dead area and concentration fractions, as well as emptying time. The consistency between dye experiments and residence time distribution experiments highlights the reliability of these parameters for optimizing tundish design and operation.</p>

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Quantitative analysis of flow characteristics within tundishes using dye experiments and image processing techniques

  • 期刊论文

  • 发表日期：

    2026年1月16日

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  • Hao-Jian Duan,
  • Ding-Han Li,
  • Li-Feng Zhang

摘要

Image processing techniques were employed to analyze the ink dispersion process in a tundish water model, providing quantitative parameters to evaluate fluid flow dynamics. Key parameters, including filling time, dead area fraction, area emptying time, peak concentration time, dead concentration fraction, and concentration emptying time, were introduced. Orthogonal tests were conducted to investigate the effects of dam spacing, height, and openings on tundish flow behavior. Results revealed that the dam spacing of 3760 mm yielded the shortest filling and peak concentration time, while the 4760 mm spacing minimized dead area and concentration fractions. Taller dams (620 mm) reduced dead area fractions but extended peak concentration time. Dams with openings demonstrated improved flow dynamics, reducing both dead area and concentration fractions, as well as emptying time. The consistency between dye experiments and residence time distribution experiments highlights the reliability of these parameters for optimizing tundish design and operation.