scholarly journals Comparison of Fluid Flow and Temperature Distribution in a Single-Strand Tundish with Different Flow Control Devices

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 796
Author(s):  
Dong-Yuan Sheng ◽  
Dengfu Chen
Keyword(s):  
Fluid Flow ◽  
Flow Control ◽  
Single Strand ◽  
Water Model ◽  
Cfd Simulations ◽  
Flow Control Devices ◽  
Flow Heat ◽  
Control Devices ◽  
Steel Flow ◽  
Turbulence Inhibitor

The effects of flow control devices (FCD) in a single-strand tundish, including weir, dam, turbulence inhibitor and gas curtain, have been investigated using water model experiments and CFD simulations. A scaled-down water model was built up to visualize flow pattern and measure the residence-time distribution (RTD) of different tundish configurations. A CFD model was applied to calculate the fluid flow, heat transfer and RTD curves in the prototype tundish under the nonisothermal conditions. The Eulerian–Lagrangian approach was applied to investigate the bubble flow in the system. The results show that each FCD has its own unique function to control the flow. It is important to evaluate the combined effects of FCD based on their installations. The molten steel flow in the tundish could be improved if these flow control devices were arranged properly.

Numerical Simulation of Flow-Induced Corrosion in One-Strand Tundish

2010 ◽  
Vol 105-106 ◽  
pp. 142-145
Author(s):  
Mei Jie Zhang ◽  
Xiao Long Lin ◽  
Wu Yan ◽  
Huang Ao
Keyword(s):  
Flow Control ◽  
Molten Steel ◽  
High Speed ◽  
Flow Direction ◽  
Wear Properties ◽  
Refractory Wear ◽  
Wear Factor ◽  
Flow Control Devices ◽  
Control Devices ◽  
Turbulence Inhibitor

Flow control devices made of refractories are established in the tundish to modify the flow characteristics. In practical producing, the metallurgical function of flow control devices is weakened because of refractories corrosion. In this subject, an index named refractory wear factor which is used to evaluate the refractory wear was defined at first. And then, the characteristics of molten steel flow and the distribution of temperature and the refractory wear factor in a one-strand tundish equipped with flow control devices of a turbulence inhibitor, a weir and a dam were numerically simulated using the commercial CFD software. At last, the influence on refractory wear factor was analyzed. The following results were obtained. The high-speed molten steel is mainly confined to the injecting zone, especially to the turbulence inhibitor. The walls around the entering zone tundish and the weir wall faced to the flow direction have higher temperature than other walls. The highest value of refractory wear factor is focused on the inhibitor and bottom wall near the outlet. In order to keep the synchronization for the tundish, the refractories used in those zones should have higher anti-wear properties.

scholarly journals Numerical Modelling of Fluid Flow and Thermal Phenomena in the Tundish of CSC Machine

2014 ◽  
Vol 14 (1) ◽  
pp. 103-106 ◽  
Author(s):  
L. Sowa
Keyword(s):  
Numerical Simulation ◽  
Flow Control ◽  
Liquid Steel ◽  
Metal Flow ◽  
Temperature Fields ◽  
Cast Slab ◽  
Flow Control Devices ◽  
Steel Cast ◽  
Control Devices ◽  
Steel Flow

Abstract The mathematical and numerical simulation model of the liquid steel flow in a tundish is presented in this paper. The problem was treated as a complex and solved by the finite element method. The single-strand slab tundish is used to continuous casting slabs. The internal work space of the tundish was modified by the following flow control devices. The first device was a striker pad situated in the pouring tundish zone. The second device was a baffle with three holes and the third device was a baffle without hole. The main purpose of using these devices was to cause a quiet liquid mixing as well as give directional metal flow upwards which facilitated inclusion floatation. The interaction of flow control devices on hydrodynamic conditions was received from numerical simulation. As a result of the computations carried out, the liquid steel flow and steel temperature fields were obtained. The influence of the tundish modification on velocity fields in the liquid phase of steel was estimated, because these have an essential influence on high quality of a continuous steel cast slab.

scholarly journals Effect Of Steel Flow Control Devices On Flow And Temperature Field In The Tundish Of Continuous Casting Machine

2015 ◽  
Vol 60 (2) ◽  
pp. 843-847 ◽  
Author(s):  
L. Sowa
Keyword(s):  
Mathematical Model ◽  
Flow Control ◽  
Numerical Simulations ◽  
Liquid Steel ◽  
Continuous Casting Machine ◽  
Casting Machine ◽  
Flow Control Devices ◽  
Control Devices ◽  
Steel Flow ◽  
The Mathematical Model

AbstractThe mathematical model and numerical simulations of the liquid steel flow in a tundish are presented in this paper. The problem was treated as a complex and solved by the finite element method. One takes into consideration in the mathematical model the changes of thermophysical parameters depending on the temperature. The single-strand tundish is used to casting slabs. The internal work space of the tundish was modified by flow control devices. The first device was a pour pad situated in the pouring tundish zone. The second device was a dam. The third device was a baffle with three holes. The dam and baffle were placed in the tundish at different positions depending on the variant. The main purpose of using these was to put barriers in the steel flow path as well as give directional metal flow upwards which facilitated inclusion floatation. The interaction of flow control devices on hydrodynamic conditions was received from numerical simulations. As a result of the computations carried out, the liquid steel flow and steel temperature fields were obtained. The influences of the tundish modifications on the velocity fields in liquid phase of the steel were estimated, because these have essential an influence on high-quality of a continuous steel cast slab.

Numerical Analysis of Liquid Steel Flow Structure in the One Strand Slab Tundish with Subflux Turbulence Controller and Dam

2012 ◽  
Vol 57 (1) ◽  
pp. 297-301 ◽  
Author(s):  
A. Cwudziński ◽  
J. Jowsa
Keyword(s):  
Numerical Analysis ◽  
Flow Control ◽  
Flow Structure ◽  
Liquid Steel ◽  
Work Space ◽  
Internal Work ◽  
Flow Control Devices ◽  
Control Devices ◽  
The One ◽  
Steel Flow

Numerical Analysis of Liquid Steel Flow Structure in the One Strand Slab Tundish with Subflux Turbulence Controller and Dam The paper present the results of computational calculation showing liquid steel flow in the tundish. The one-strand slab tundish is used to casting slabs. The internal work space of tundish was modified by two flow control devices (FCDs). The first device is subflux turbulence controller situated in the pouring tundish zone. The second FCD is a dam with two holes. The dam presently using in the industrial conditions was modified by changing a height. Adapted to internal work space new flow control devices were located in the tundish virtual model. Numerical model and computational grid of tundish was performed in the Gambit application. The visualization of interaction of flow control devices on hydrodynamic conditions was received from numerical simulation. As a results of the computations carried out, liquid steel flow fields, turbulence intensity maps, steel temperature maps and RTD curves (E and F) were obtained. On the distribution of RTD characteristics, percentage contributions of stagnant, plug, ideal mixing flow type, and transition grade zone were calculated.

Sign in / Sign up

Export Citation Format

Share Document