Piv Method and Numerical Computation for Prediction of Liquid Steel Flow Structure in Tundish

Abstract

This paper presents the results of computer simulations and laboratory experiments carried out to describe the motion of steel flow in the tundish. The facility under investigation is a single-nozzle tundish designed for casting concast slabs. For the validation of the numerical model and verification of the hydrodynamic conditions occurring in the examined tundish furniture variants, obtained from the computer simulations, a physical model of the tundish was employed. State-of-the-art vector flow field analysis measuring systems developed by Lavision were used in the laboratory tests. Computer simulations of liquid steel flow were performed using the commercial program Ansys-Fluent R . In order to obtain a complete hydrodynamic picture in the tundish furniture variants tested, the computer simulations were performed for both isothermal and non-isothermal conditions.Keywords: tundish, steel flow, numerical simulation, PIV method W pracy przedstawiono wyniki symulacji numerycznej i eksperymentów laboratoryjnych opisujących ruch stali w kadzi pośredniej. Analizowanym obiektem była jedno-wylewowa kadź pośrednia przeznaczona do odlewania wlewków płaskich. Do walidacji modelu numerycznego i weryfikacji warunków hydrodynamicznych występujących w analizowanych wariantach zabudowy kadzi pośredniej zastosowano symulacje komputerowe i fizyczny model kadzi pośredniej. W eksperymentach laboratoryjnych do analizy wektorowego pola przepływu zastosowano system pomiarowy firmy Lavision. Symulacje komputerowe przepływu ciekłej stali wykonano programem Ansys-Fluent R . W celu zyskania pełnego obrazu hydrodynamiki ruchu stali w analizowanym obiekcie symulacje komputerowe wykonano dla warunków izotermicznych i nieizotermicznych.

Physical modelling of fluids’ interaction during liquid steel alloying by pulse-step method in the continuous casting slab tundish

“…The previously presented results on the flow hydrodynamics for the analysed tundish showed that in the current configuration of the tundish equipment, there are two areas of vertical recirculation distributed more or less symmetrically with respect to the longitudinal axis. In addition, in earlier works, it was observed that in the central part of the tundish, the hydrodynamic field is subject to periodic fluctuation [35,47]. Therefore, in the current work, the flow fields at the interaction site of water with the tracer were recorded and the fluctuation level was recorded.…”

“…The physical glass model of tundish was made on a scale of 2:5 (Figure 1(b)). The linear scale of the model ensures geometric similarity to the real facility, whereas the dynamic similarity was ensured by Froude criterion generally applied to traditional investigations for the development of continuous casting technology [34][35][36][37][38][39][40][41]. Within the project being implemented, the test stand has been retrofitted with the planar laser-induced fluorescence system (PLIF), sCMOS camera and third harmonic optics supplied by Dantec Dynamics.…”

Flow Characteristics for Two-Strand Tundish in Continuous Slab Casting Using PIV

“…Digital image measurement technology can not only achieve the overall structure and transient image field, but also obtain the velocity data of the whole flow field quantitatively. Some researchers [7][8][9] have measured the flow field in the tundish by the particle image velocimetry (PIV), thus that the overall structure and transient image of a planar flow field was obtained quantitatively.…”

Particle Image Velocimetry Method for Prediction Hydrodynamic Conditions during Leaching Process on the Basis of Sn–NaOH System

“…Therefore, tin, like major industrial metals with abundance in the earth’s crust below 0.0002%, required additional insight into fundamental knowledge on tin metallurgy [ 22 , 23 ]. This research work presents results related to hydrodynamic structures developing in batch reactors, different in shape, recorded by means of the particle image velocimetry (PIV) method [ 24 , 25 , 26 , 27 ]. Particle image velocimetry is the non-invasive method for predicting hydrodynamics wherever the testing objects and fluids are transparent.…”