Experimental Methods of Validation for Numerical Simulation Results on Steel Flow through Tundish

Abstract

The article presents experimental results on the impact of tundish flow regulator influencing the liquid steel flow course. The research was conducted based on the hybrid modelling methods understood as a complementary use of Computational Fluid Dynamics (CFD) methods and physical modelling. Dynamic development of numerical simulation techniques and accessibility to highly advanced and specialized software causes the fact that these techniques are commonly used for solving problems related to liquid flows by using analytical methods. Whereas, physical modelling is an important cognitive tool in the field of empirical identification of these phenomena. This allows for peer review and specification of the researched problems. By exploiting these relationships, a comparison of the obtained results was performed in the form of residence time distribution (RTD) curves and visualization of particular types of liquid steel flow distribution zones in the investigated tundish.

Modelling the influence of changing constructive parameters of multi-strand tundish on steel flow and heat transfer

“…The optimal tundish should be characterised by the well mixing of liquid steel, should have possibly the biggest area of dispersed plug flow and the smallest participation of dead areas. 6,9 Validation with industrial tests…”

“…This is caused of comes from the fact that some tundish operational factors influence the temperature and purity, consequently the cast steel homogeneity. [5][6][7][8] Following the metallurgical demands and assumed level and grades of production [8][9][10][11][12] various construction types for the tundish are found. Given priorities decide not only about the tundish construction type but also about other issues (nominal tundish capacity, number and sections of moulds, casting time, length of casting sequence, etc.).…”

Archives of Metallurgy and Materials

“…nonetheless, too intense turbulence may cause undesirable effects, such as entrainment of the tundish powder drops or particles, which will contribute to the steel contamination, which, in turn, will lead to a reduction of its quality. control of the liquid steel flowing through the tundish is usually accomplished by the use of flow control devices (FcD), including weirs, dams [1][2][3][4][5][6][7][8] and turbulence inhibitors [9][10][11][12][13]. Intensive scientific research popularised the use of trumpet (TLS) [14][15], dissipative (DLS) [16][17][18] and swirling ladle shrouds (SLS) [19][20][21] as devices controlling the flow, but the basic feature of these ladle shrouds is that they begin and end with one hole.…”