重型机械Issue(2)：51-58,8.
十流中间包内部结构优化的数值模拟与水模型实验研究
Numerical simulation and water model experiment study on internal structure optimization of a ten-strand tundish
霍跃钦 1王文学 1何博 1李新强 1姚成功 1乔玉聪1
作者信息
- 1. 中国重型机械研究院股份公司炼钢工程事业部,陕西 西安,710018
- 折叠
摘要
Abstract
Multi-strand tundishes often exhibit significant residence time variations among strands due to their complex structures,adversely affecting molten steel cleanliness.This study takes a ten-strand symmetrical industrial tundish as the research object,employing a combined approach of CFD numerical simulation and 1∶2 scale water model experiments to optimize the internal flow control devices for improved billet quality.A three-dimensional non-isothermal CFD model was established using the standard k-ε turbulence model and the Lagrangian discrete phase model to track 20-80 μm alumina(Al2O3)inclusions,with heat losses characterized by specified heat fluxes through the slag layer,sidewalls,and bottom.Based on the Froude similarity criterion,a transparent water model was constructed,and particle image velocimetry(PIV)was employed to validate the flow field at typical cross-sections.Six flow control configurations(benchmark;multi-hole baffle;large/small L-type baffle;dam-weir structure;and inclined baffle)were evaluated under both normal and high casting speed conditions.The results indicate that the large L-type baffle significantly increases the plug flow volume fraction,reduces the dead zone volume fraction,and improves the uniformity of residence time distribution(RTD)among the strands.With this configuration,the dead zone volume decreases from 26.0%in the benchmark scheme to 16.4%,while the plug flow volume increases from 11.0%to 25.9%.The PIV measurements show good agreement with the numerical simulations,validating the reliability of the model.The large L-type baffle is thus recommended as the optimal flow control device for ten-strand symmetrical tundishes,providing both theoretical basis and engineering guidance for the optimization of similar tundish designs.关键词
中间包冶金/控流装置/停留时间分布/夹杂物去除/水模拟/PIVKey words
tundish metallurgy/flow control device/residence time distribution/inclusion removal/water modeling/PIV分类
矿业与冶金引用本文复制引用
霍跃钦,王文学,何博,李新强,姚成功,乔玉聪..十流中间包内部结构优化的数值模拟与水模型实验研究[J].重型机械,2026,(2):51-58,8.
