Flow field characteristics of a coherent jet using various lance tip structures

WEI Guang-sheng; ZHU Rong; CHENG Shu-jiang; LIU Fu-hai; DONG Kai; YAO Liu-jie

doi:10.13374/j.issn2095-9389.2020.03.20.s17

Volume 42 Issue S

Dec. 2020

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Article Navigation > Chinese Journal of Engineering > 2020 > 42(S): 76-82

WEI Guang-sheng, ZHU Rong, CHENG Shu-jiang, LIU Fu-hai, DONG Kai, YAO Liu-jie. Flow field characteristics of a coherent jet using various lance tip structures[J]. Chinese Journal of Engineering, 2020, 42(S): 76-82. doi: 10.13374/j.issn2095-9389.2020.03.20.s17

Citation:

WEI Guang-sheng, ZHU Rong, CHENG Shu-jiang, LIU Fu-hai, DONG Kai, YAO Liu-jie. Flow field characteristics of a coherent jet using various lance tip structures[J]. Chinese Journal of Engineering, 2020, 42(S): 76-82. doi: 10.13374/j.issn2095-9389.2020.03.20.s17

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Flow field characteristics of a coherent jet using various lance tip structures

doi: 10.13374/j.issn2095-9389.2020.03.20.s17

1.
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2.
Key Laboratory of Fluid Interaction with Material (Ministry of Education), University of Science and Technology Beijing, Beijing 100083, China
3.
Yanzhou Gaolida Co. Ltd., Yanzhou 225800, China
4.
National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China

More Information

Corresponding author: E-mail: liufuhaisteel@126.com
Received Date: 2020-03-20
Publish Date: 2020-12-25

Abstract

Abstract

Coherent lances have been playing an extremely important role in the process of supplying oxygen to an electrical arc furnace, which has been widely used in metallurgy, and its metallurgical and operational benefits have been well reported. When compared with the conventional supersonic oxygen lance, the coherent lance could increase the oxygen utilization rate, strengthen penetration ability, and achieve a good stirring effect. However, there was limited research about the flow field characteristics of a coherent jet using different restriction structures for a coherent lance tip. This paper analyzed velocity and temperature profiles at various parameters and conditions. Both numerical simulation and combustion experiment have been carried out to investigate the velocity and temperature profiles using three kinds of restriction structures at room and high ambient temperature conditions. Further, the impact diameter and depth of the molten bath have also been analyzed at a certain lance height. The result shows that the restriction structure could delay energy transmission in a radial direction, which enlarges a high-temperature zone in an axial direction, resulting in the increase of the velocity potential core length and the improvement of the mixing ability of the main oxygen jet.
- coherent lance,
- flow field,
- numerical simulation,
- combustion experiment

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References(12)

References

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