Investigation of the Flow Structure in the Tundish with the Use of Rans and Les Methods

Self Cite

In order to increase the efficiency and quality of the steel-making process a numerous studies are conducted at the various stages of the process, including continuous casting of steel. Researchers still search for new models and improve existing one, so that the specific of the process is accuratelly reproduced. One way to increase the accuracy of numerical simulation, is to apply the LES (Large Eddy Simulation) method to simulate steelmaking processes. The article presents the results of numerical analysis on the flow characteristics (RTD curves) of liquid steel in the tundish facility for the continuous casting of steel. Numerical simulations have been performed using RANS (Reynoldsaveraged Navier-Stoke) and LES methods, and those results have been verified in industrial conditions.

Section: Introductionsupporting

confidence: 54%

Section: Description Of the Problemmentioning

confidence: 98%

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Large-Eddy Simulations of a Flow Characteristics in a Multi-Strand Continuous Casting Tundish / Badania Numeryczne Charakterystyk Przepływu W Wielo-Wylewowej Kadzi Posredniej Metodą Wielkich Wirów (Les)

Merder¹,

Warzecha²,

Warzecha³

2015

Self Cite

“…The development of the steel continuous casting primarily serves the improvement of the production process by improving the quality of the steel products. [1][2][3][4][5][6][7][8][9][10][11] The cooling water flow rate in individual cooling zones of the continuous casting machine, which is correlated with the cast strand casting speed, is one of the most important process parameters. Due to the need to cast new steel grades, it is necessary to develop a strategy for the selection of cooling parameters.…”

Section: Introductionmentioning

confidence: 99%

Strategy of Cooling Parameters Selection in the Continuous Casting of Steel

Falkus

Miłkowska-Piszczek

2016

This paper presents a strategy of the cooling parameters selection in the process of continuous steel casting. Industrial tests were performed at a slab casting machine at the Arcelor Mittal Poland Unit in Krakow. The tests covered 55 heats for 7 various steel grades. Based on the existing casting technology a numerical model of the continuous steel casting process was formulated. The numerical calculations were performed for three casting speeds -0.6, 0.8 and 1 m min -1 . An algorithm was presented that allows us to compute the values of the heat transfer coefficients for the secondary cooling zone. The correctness of the cooling parameter strategy was evaluated by inspecting the shell thickness, the length of the liquid core and the strand surface temperature. The ProCAST software package was used to construct the numerical model of continuous casting of steel.

“…The application of numerical computing for the analysis and identification of the existing processrelated problem can lead to finding an appropriate solution. It results in an improvement of production and the quality of products [1][2][3][4][5][6][7][8][9][10][11][12]. For the continuous casting of steel, it could be analysis of the effect of the interaction between the solidifying metal and the mould wall, the effect of the mould powder, or the effect of the non-metallic inclusions.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Thermophysical Parameters on Temperature Distribution in the Primary Cooling Zone

Miłkowska-Piszczek¹

2016

The values of thermophysical properties obtained from the experimental research, and those that were calculated with thermodynamic databases, are crucial parameters which were used in the numerical modelling of the steel solidification process. This paper presents the results of research on the impact of specific heat and enthalpy, along with the method of their implementation, on temperature distribution in the primary cooling zone in the continuous steel casting process. A cast slab – with dimensions of 1100 mm and 220 mm and a S235 steel grade – was analysed. A mould with a submerged entry nozzle (SEN), based on the actual dimensions of the slab continuous casting machine, was implemented. The research problem was solved with the finite element method using the ProCAST software package. Simulations were conducted using the “THERMAL + FLOW” module.