Numerical Simulation of Effect on Billet Casting Q235 under Inner-Out Cooler

2011 ◽  
Vol 308-310 ◽  
pp. 651-655
Author(s):  
Lang Li ◽  
Guo Ping Chen
Keyword(s):  
Thermal Conductivity ◽  
Numerical Simulation ◽  
Temperature Field ◽  
Flow Field ◽  
Molten Steel

There is a new idea on the billet casting Q235 with size of 165mm×165 mm,It involves a couple technology to cool molten steel both from inside and outside, namely: to emplace an inner cooler -a pipe with the shape of letter U in the mould. It aims to increase the thermal conductivity and improve the inner structure of the billet. With the help of Fluent -a kind of CFD business soft ware, a numerical simulation is undertaken to testify the condition of the molten steel in the inner-outer cooling mould coupled by flow field and temperature field.

Effects of U-Shape Inner Cooler on Flow and Solidification of Molten Steel in Slab Continuous Casting Mold

2011 ◽  
Vol 291-294 ◽  
pp. 423-427
Author(s):  
Yan Juan Jin ◽  
Xiao Chao Cui ◽  
Zhu Zhang
Keyword(s):  
Fluid Dynamics ◽  
Temperature Field ◽  
Flow Field ◽  
Continuous Casting ◽  
Molten Steel ◽  
Continuous Casting Mold ◽  
Slab Continuous Casting ◽  
Cooling Technology ◽  
Steel Flow

An inner-outer coupled cooling technology of molten steel for 1240×200mm slab continuous casting, that is to set an inner cooler—U shape pipes in the mold, is put forward in order to enhance the efficiency of transmitting heat and improve inner structure of billet. The flow status and solidification status of molten steel under coupling flow field and temperature field in inner-outer coupled cooling mold are simulated by using fluid dynamics software, and compare with those in traditional mold. It is found that setting inner cooler in the mold can make molten steel flow status even, which is favorable to floating up of the inclusion, quickening the solidification of steel liquid and improving the quality of billet.

Numerical Simulation of Inner-Outer Couple Cooling Slab Continuous Casting in the Filling Process

2012 ◽  
Vol 557-559 ◽  
pp. 2257-2260
Author(s):  
Yan Juan Jin ◽  
Xiao Chao Cui ◽  
Yan Xia Chen
Keyword(s):  
Temperature Field ◽  
Flow Field ◽  
Continuous Casting ◽  
Molten Steel ◽  
Solidification Rate ◽  
Surface Shape ◽  
Filling Process ◽  
Slab Continuous Casting ◽  
Free Surface Shape ◽  
Steel Flow

In the paper, flow status and solidification status of molten steel in inner-outer couple cooling mold in the filling process are simulated by using fluid dynamics software Flow-3d, and obtain distributing diagrams of flow field and temperature field and free-surface shape diagrams in the filling process. Influences of flow field and temperature field of filling process on solidification are analyzed in the slab continuous casting. It is indicated that inner cooler can improve molten steel flow status, which is favorable to inclusion in molten steel floating up, quicken the solidification rate of molten steel in the mold.

Numerical Simulation of Air Curtain Used in the Cold Store through Different Models

2013 ◽  
Vol 749 ◽  
pp. 554-560
Author(s):  
Jing Xie ◽  
Chen Miao ◽  
Zhi Li Gao ◽  
Jian Bing Shi ◽  
Tai Wang
Keyword(s):  
Numerical Simulation ◽  
Temperature Field ◽  
Flow Field ◽  
Numerical Models ◽  
Air Flow ◽  
Boussinesq Approximation ◽  
Optimal Model ◽  
Air Curtain ◽  
Cold Store ◽  
Operation Rule

Air curtains are commonly used to cut off air flow between the cold store and hot environment, and reduce heat and mass transfer in order to maintain the low temperature in the cold store. CFD can be used to predict operation rule of air curtain used in the cold store intuitively and modelling is the most important part of numerical simulation of air curtain used in the cold store. In this study, different numerical models including standardmodel (with and without boussinesq approximation) and RSM (with and without boussinesq approximation) were used to simulate the temperature field and air flow field in the cold store and operation rule of air curtain used in the cold store after air curtain opened for 60s. Meanwhile, the actual operation of air curtain used in the cold store was tested and the simulation values were compared with the experimental values. The results showed that the velocity of the central mainstream decayed slowly, but the velocity of both sides of air curtain decayed fast. The optimal model used to predict the temperature field and air flow field in the cold store and operation rule of air curtain used in the cold store was standardmodel with boussinesq approximation, the relative error was within 20%. The optimal model can be used to predict the temperature field and air flow field in the cold store during different times in the future research.

Numerical Simulation of the Temperature Field and the Flow Field Inside the Domestic Cooling and Heating Unit’s Water Tank

2012 ◽  
Author(s):  
Chao Zhu ◽  
Mo Yang ◽  
Yuwen Zhang ◽  
Jinlong Wang
Keyword(s):  
Numerical Simulation ◽  
Temperature Field ◽  
Temperature Distribution ◽  
Flow Field ◽  
Water Temperature ◽  
Waste Heat ◽  
Flow Distribution ◽  
Water Tank ◽  
Heating Unit ◽  
Speed Up

A water tank of the domestic cooling and heating unit, which has a helix coil, is used to recover the waste heat of the unit. The temperature field and the flow field in the water tank have great effects on the variation of the water temperature in it. In order to obtain the temperature distribution, the flow distribution and the influencing factors, and then obtain the changing situation of the water temperature, the temperature field and the flow field of the water tank are simulated by using Fluent. The results showed that the water temperature will change with different coil decorate. The numerical model which is created by Fluent is appropriate and could be used to improve the layout of the coil in the water tank and speed up heating.

scholarly journals Flow Field and Temperature Field in a Four-Strand Tundish Heated by Plasma

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 722
Author(s):  
Mengjing Zhao ◽  
Yong Wang ◽  
Shufeng Yang ◽  
Maolin Ye ◽  
Jingshe Li ◽  
...  
Keyword(s):  
Temperature Field ◽  
Flow Field ◽  
Molten Steel ◽  
Short Circuit ◽  
Plasma Heating ◽  
Three Dimensional ◽  
Heating Power ◽  
Flow State ◽  
Selection Of ◽  
Temperature Area

Tundish plasma heating is an effective method for achieving steady casting with low superheat and constant temperature. In order to study the flow field, temperature field in tundish heated by plasma, a three-dimensional transient mathematical model was established in the present work. A four-strand T-type tundish in a steelmaking plant was used to explore the changes in the flow field and temperature field of molten steel in the tundish under different plasma heating powers. The results showed that plasma heating affected the flow state of molten steel. It could eliminate the short-circuit flow at outlet. When the plasma heating was 500 kW, the molten steel had an obvious upward flow. The turbulence intensity was improved and distributed evenly with an increase in plasma heating power. In the prototype tundish, the temperature of the outlet was dropped by nearly 2–3 K within 300 s. With the increase of plasma heating power, the low temperature area in the tundish gradually was decreased. When the heating power was 1000 kW, the temperature difference of two outlets was 0.5 K and the overall temperature distribution was more uniform. The research results have a certain guiding significance for the selection of the actual plasma heating power on site.

Increasing the Work of the Diamond Grinding Circuits for the Account of Directed Changes in the Heat Conductivity of a Polymer Matrix

2018 ◽  
Vol 935 ◽  
pp. 84-88
Author(s):  
Zalim N. Deunezhev
Keyword(s):  
Thermal Conductivity ◽  
Numerical Simulation ◽  
Temperature Field ◽  
Polymer Matrix ◽  
Heat Conductivity ◽  
Thermal Load ◽  
Polymer Binder ◽  
Diamond Grinding ◽  
The Matrix ◽  
Grinding Circuits

Numerical simulation has been used to study the temperature field in a diamond-containing composite on a polymer matrix. It is shown that an increase in the thermal conductivity of the matrix due to fillers provides a reduction in the thermal load on the polymer binder.

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