Transient steel quality under non-isothermal conditions in a multi-strand billet caster tundish: part I. Analysis of fluid flow, thermal behaviour and inclusion behaviour. (3rd July 2017)

• Record Type: Journal Article
• Authors: Chatterjee, S.; Chattopadhyay, K.
• Is Part Of: Ironmaking & steelmaking. Volume 44:Number 6(2017)
• Page Start: 403
• Page End: 412
• Publication Date: 2017-07-03
• Subjects: Non-isothermal -- Tundish -- Steel cleanliness -- Fluid flow -- Temperature -- Inclusion; Iron industry and trade -- Periodicals; Steel industry and trade -- Periodicals; 669.1
• DOI: 10.1080/03019233.2016.1214014
• Languages: English
• ISSNs: 0301-9233

Abstract

Abstract : A numerical model based on computational fluid dynamics was used to simulate the effect of non-isothermal conditions on melt flows in a multi-strand billet caster tundish. To start with, water was used as the operating fluid in a one-third scale tundish to calculate the fluid flow and temperature fields under isothermal and non-isothermal conditions. The model was then extended to the full-scale tundish with molten steel as the operating liquid in order to simulate the conditions in a real plant. It was observed that using step inputs of 10° and 23° for water and steel cases, respectively, changed the fluid flow patterns significantly, more so at locations far from the inlet, due to stronger buoyancy-driven natural convective flows. The temperature distribution and inclusion trajectories within the tundish were also affected due to the presence of non-isothermal conditions.