大方坯连铸结晶器水口优化模拟探究

doi:10.13228/j.boyuan.issn1005-4006.20220091

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Abstract In order to study the influence of different immersion nozzle types on the flow field in mold, taking the nozzle optimization of mold as the starting point, two methods of physical simulation and numerical simulation were used to carry out the optimization of different nozzle of 280 mm×380 mm large slab mold. In this study, a 1∶1 mold water simulation test device was firstly constructed to simulate continuous casting flow under different submerged entry nozzle. The mold cross section flow field under different nozzle was measured by PIV. Then, Fluent software was used to further study the influence of parameters such as the opening angle, opening number and installation angle on the flow field and liquid level fluctuation in the mold. Physical simulation and numerical simulation show that when the opening angle is upward, the fluctuation range is more than 5 mm; When the opening angle is horizontal, the impact velocity of narrow surface is too large, reaching 0.35 m/s. The liquid level velocity of four-hole nozzle is 0.22 m/s compared with that of double-hole nozzle, which is lower than the critical velocity value of slag coiling. When the nozzle installation angle is changed to diagonal, the flow in the corner of the internal flow field is strengthened and the flow in the whole flow field is more stable.

Key words： mold submerged entry nozzle liquid level fluctuation numerical simulation physical simulation

Received: 24 May 2022

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	Articles by authors
	ZHOU Chen-yang
	HUANG Jun
	ZHANG Ya-zhu
	WANG Shu-hao
	ZHANG Heng

Cite this article:

ZHOU Chen-yang,HUANG Jun,ZHANG Ya-zhu等. Study on the optimization simulation of submerged entry nozzle in mold during bloom continuous casting[J]. CONTINUOUS CASTING, 2023, 42(1): 97-105.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20220091 OR http://www.chinamet.cn/Jweb_lz/EN/Y2023/V42/I1/97

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