The Effect of a Dissipative Ladle Shroud on Mixing in Tundish: Mathematical and Experimental Modelling

High Temperature Materials and Processes

Jiang Zhengyi¹  Tang Haiyan²  Zhang Jiangshan²  Li Jingshe²  Yang Shufeng² 

[1] School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, WollongongNSW 2522, Australia;School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing100083, P.R.China;

关键词: large eddy simulation;    ladle shroud;    tundish;    mixing;    continuous casting;   

DOI  :  10.1515/htmp-2016-0093

来源: DOAJ

【 摘 要 】

The effect of a dissipative ladle shroud (DLS) on mixing in tundish was investigated, compared with that of a conventional ladle shroud (CLS) using mathematical and physical modelling. The tracer profiles of mathematical results, achieved using large eddy simulation, were validated by physical observations employing high-speed cinephotography. The design of a DLS dramatically changed the flow patterns and contributed the intermixing of fluid elements inside the ladle shroud. The vortex flow encouraged the turbulent mixing and was verified by tracking of physical tracer dispersion inside the DLS. Residence Time Distribution (RTD) curves were obtained in two different sized tundishes to examine the mixing behaviours. The findings indicated that the DLS benefited the tundish mixing in terms of increasing active volume. The effect seemed to be more remarkable in the smaller tundish. The DLS gave rise to a more plug-like flow pattern inside the tundish, showing potential to shorten the transition length during grade change.

【 授权许可】

Unknown