连铸结晶器熔池内三维流场的研究

A Study of Three-Dimensional Flow Field in the Mold Region in Continuous Casting Systems

  • 摘要: 本文采用快速收敛的ADC1法,k-ε双方程湍流模型和雷诺方程,计算了连铸结晶器熔池内的三维流场,计算结果与实验测定相一致,取得了快速收敛节省机时的突出效果,并且在流场结构及特性上得出了较二维计算更为真实全面的结果。在湍流计算中得出C2的新经验值,保证了计算的稳定性。

     

    Abstract: In this paper, a study of three-dimensional flow field in the mold region by means of mathematical modeling is reported.The mathematical model consists of time-average turbulent Reynolds equations and the k-e two equations model of turbulence.The Artificial Damping and compressibility method which is developed by Gao Ge is used to solve these equations.The computed resultsfor the velocity field has been found to be in good agreement with the data——measured in experiments.It only takes 8min.26sec.for three-dimensional turbulent flow field of 10×10×20=2000 cells on M-150 electronic Computer.The results show that the convergence rate increases by a few order of magnitude as Compared with the conventional SOR method.
    A new experienced value of C2(c2=2.23) was obtained when the k-ε two equations turlulent model was calculated.

     

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