【摘要】 利用k-ε紊流模型和水模型对结晶器流场进行了数值和物理模拟。结果表明:钢液对坯壳冲刷速度的最大值发生在结晶器入口附近回流区,其值达拉坯速度的2.52倍,并且流动模式不随拉坯速度变化。更多还原

【Abstract】 The extensive investigations on the flow fields with k-ε mathematical model of turbulence and water model are presented. A quite different flow pattern from ordinary caster was found because of mild curvature of mold and strong jet from enclosed nozzle. The typical difference is the unsymmetry of flow whose recirculation zone on wheel side is larger than belt side and extends as long as 4 times the mold width. Another feature is that maximum speeds near walls are in recirculation zones and their values are 2.52 (wheel side) and 2 (belt side) times casting speed respectively.更多还原