【摘要】 提出了针对多流中间包流动特征的数学模型,给出了绘制停留时间分布(RTD)曲线的标准及其相关计算的规范;明确了"死区"的特性,并计算了其体积分数;模型中考虑到了短路流,指出计算短路流的方法.模型可以更好地刻画活塞流的流动特性.更多还原

【Abstract】 A mathematical model of flow characterization in multi-strand continuous casting tundishes was attempted to put forward, the standard of plotting residual time distribution (RTD) curves was definitely presented and a relative calculation method was proposed. The feature of dead region was carefully studied and a method to calculate its volume fraction was given in the model. What’s more, the model considers bypass flow and proposes a method to calculate its volume fraction. Experimental results show that this new model can better capture the difference between the reality flow pattern and the ideal plug flow pattern and reflects the feature of plug flow.更多还原