连铸结晶器内湍流场的测试与计算

Measurement and Calculation for Turbulevt Flow Field in Continuous Casting Mould

将ＳＩＭＰＬＥ算法应用于冶金中的数值计算，采用Ｋ－ε双方程模型和雷诺方程数值计算了拉速１．３ｍ／ｍｉｎ条件下连铸结晶器内的三维湍流场。得出了与实测一致的流场特点，同时，得出了松驰因子的新经验值ａ＝０．２５及压力修正因子ａ＝０．５．编译的计算程序，可用来计算任意有限空间为三维流场。

he SIMPLE algorithm was applied in num berical calculation of metallurgicalprocess in this paper. By means of K-ε two equations and Reynold equation ,three dimensional turbu-lent flow field in C C mould is computed on condition of casting speed 1.3m/min. The flowd fieldcharacteristics from the calculation is accorded with that from the measurment.At the same time,thenew experience value of relaxation factor a=0.2 5 and Correction pressure factor ap=0.5 was ob-tand. The general calculation progra m translated can be used to calculate any three dimensionalfiow field in arbitrary finite space.