Simulation On Fluid Flow And Temperature Distribution In Mold Of Slab Continuous Casting

A method to simulate the fluid flow and temperature distribution in slab continuous casting mold has been introduced in this paper. A three-dimensional comprehensively time-independent coupled model has been developed according to this method. The model then has been solved by commercial CFD package and program designed in Visual Fortran. A solidification model based on Effective Capacity Method has been developed and used during the simulation process. The numerical fluid flow was dynamically updated during the program process by using this solidification model. Special efforts were put into the shell thickness distribution in mold. The numerical results show reasonable agreement with experimental observations and measurements conducted in Bao Steel and Chongqing Iron & Steel Co. Ltd.According to the calculated results,the shell thickness on broad face is thicker than the shell thickness on narrow face,hi the same horizontal plane,the thickest shell is at the center of broad face while the thinnest shell is at the corner of the plane. The temperature distribution and the shell thickness distribution have been calculated and compared under different inlet speed,inlet depth,and different inlet angle,inlet super-heat. Results show that higher casting speed leads to higher face temperature and thinner shell thickness of the slab at exit of the mold. Also,higher inlet super-heat leads to thinner shell thickness at the exit of the mold. Furthermore,the influences of the inlet angle and the inlet depth to exit shell thickness have been calculated in this paper. The influence of the numerical methods used in the model has been discussed in the numerical process.Making use of the program developed in this paper and it's numerical results are able to simulate fluid flow and temperature distribution in slab continuous casting. Therefore,this model will have useful guiding significance to design rational mold and casting technology parameters,simulate temperature distribution and shell thickness in mold under different working condition.