Study of Flow Characteristics of Tundish Based on Digital Image Velocimetry Technique

Huang, Jun; Zhang, Yongjie; Zhang, Yazhu; Zhang, Yakun; Ye, Xin; Wang, Baofeng

doi:10.1007/s11663-016-0740-8

Cited by 13 publications

(15 citation statements)

References 21 publications

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“…Polystyrene beads with a density of 1.02 g/cm 3 and a diameter of 50 µm are tracing particles. Similar to a commercial PIV system, the displacement of tracing particles is obtained by the cross-correlation algorithm for the two images in the tested area, and the data are processed by the authorized PIVview software to display the two-dimensional velocity vector field within the areas in which velocity is measured [13].…”

Section: Experimental Object and Schemementioning

confidence: 99%

Flow Characteristics for Two-Strand Tundish in Continuous Slab Casting Using PIV

Huang

Yuan

Shi

et al. 2019

Metals

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With the development of continuous casting technology, there has been an increase in the stringent requirements for the cleanliness and quality of steel being produced. The flow state of molten steel in tundish is the key to: Optimizing the residence time of molten steel in the tundish; homogenizing the temperature of molten steel; and removing inclusions by floatation. Hence, from theoretical and practical aspects, it is imperative to examine and analyze the flow field of molten steel in the tundish in order to ensure the desired molten steel flow. In this study, a two-strand tundish with 650 mm × 180 mm slab casting is considered as the subject for this research. According to the similarity theory, combined with the geometrical shape and dimension of the prototype tundish, a tundish model with a geometric similarity ratio of 2:3 is established in the laboratory. Digital particle image velocimetry (PIV) is employed to measure and examine the flow fields at different casting speeds for a tundish containing different flow control devices. The flow in the tundish is typically turbulent and also consists of a vortex motion; it exhibits both random and ordered characteristics. Results reveal that the presence of baffles with 15° holes can cause an upward-directed flow in the outlet section and give rise to a large circulation. When the casting speed is doubled, the overall velocity of the flow field and turbulent intensity increase, leading to an increase in the molten steel surface velocity.

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Section: Experimental Object and Schemementioning

confidence: 99%

Flow Characteristics for Two-Strand Tundish in Continuous Slab Casting Using PIV

Huang

Yuan

Shi

et al. 2019

Metals

Self Cite

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“…When the breakout occurs, the heat flux in mold wall will increase suddenly as shown in Figure , where Figure a shows the mold displacement ( D m ), velocity ( V m ), and the contour map of the heat flux evolution across the mold hot surface, and Figure b shows the surface profile of the shell. It is clearly shown in Figure a that there are four heat flux peaks around 4 MW m −2 in the contour map, when the breakouts occurred at 42.2, 42.8, 43.4, and 44.2 s. The fresh melts flow out of the shell and penetrate into the mold/shell gap, which results in the sudden increase of the heat flux as the fresh melt contacts with the mold hot surface directly.…”

Section: Breakout Versus Heat Transfermentioning

confidence: 99%

“…The evolution of heat flux and shell surface profile during the process a) heat flux, b) surface profile of shell …”

Section: Breakout Versus Heat Transfermentioning

confidence: 99%

Initial Solidification and Its Related Heat Transfer Phenomena in the Continuous Casting Mold

Wang

Zhu

Zhou

2017

steel research int.

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The initial solidification of molten steel in the mold is very important, as it is the origin of the final slab, which associates with the surface defects and determines the final quality of casting slab. In this article, six main topics, including the initial solidification study method, molten steel solidification, mold flux structure, fluid flow, oscillation marks formation, and breakout are reviewed with the purpose to explore the intrinsic mechanism of the complex initial solidification process and its related multi-phase heat transfer phenomena. The results summarized here can provide a foundational understanding of the initial solidification and heat transfer phenomena occurring in the continuous casting mold.

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“…Therefore, tin, like major industrial metals with abundance in the earth’s crust below 0.0002%, required additional insight into fundamental knowledge on tin metallurgy [ 22 , 23 ]. This research work presents results related to hydrodynamic structures developing in batch reactors, different in shape, recorded by means of the particle image velocimetry (PIV) method [ 24 , 25 , 26 , 27 ]. Particle image velocimetry is the non-invasive method for predicting hydrodynamics wherever the testing objects and fluids are transparent.…”

Section: Introductionmentioning

confidence: 99%

Particle Image Velocimetry Method for Prediction Hydrodynamic Conditions during Leaching Process on the Basis of Sn–NaOH System

Cwudziński

Gajda

2021

Materials

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In leaching processes controlled by diffusion and convectional transport of mass, the hydrodynamic structure formed in the reactor’s working volume is an additional factor affecting the process. This research work presents results related to hydrodynamic structures developing in batch reactors, different in shape, recorded by means of the particle image velocimetry (PIV) method. The movement of the distilled water and leaching solution was analyzed during investigations. Next, the system hydrodynamics and the process of tin leaching were analyzed. Finally, the leaching is affected by the reactor geometry and the hydrodynamic structure developed in its working volume, especially when a convectional or diffusion mass transport decides the process efficiency.

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Study of Flow Characteristics of Tundish Based on Digital Image Velocimetry Technique

Cited by 13 publications

References 21 publications

Flow Characteristics for Two-Strand Tundish in Continuous Slab Casting Using PIV

Flow Characteristics for Two-Strand Tundish in Continuous Slab Casting Using PIV

Initial Solidification and Its Related Heat Transfer Phenomena in the Continuous Casting Mold

Particle Image Velocimetry Method for Prediction Hydrodynamic Conditions during Leaching Process on the Basis of Sn–NaOH System

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