Liquid Jet Impingement Cooling in High Temperature Materials Processing

拟议调查的目的是解决 与高温冷却相关的基本问题， 通过液体射流冲击来获得更高的热通量表面。近几 多年来，这种冷却方法已广泛用于 加工初级金属，如钢和铝。的 关注的问题是与单一区域相关的区域划分， 相强制对流，强制对流核态沸腾， 和薄膜沸腾的加热板暴露在一个单一的射流 一排喷气机局部传热测量将 用于确定对流系数在单和双- 相流状态待研究的参数包括 喷气式飞机和喷气式飞机的流体动力学和几何特征 阵评估推断的基本结果的适用性 从实验室研究，模型，使用实验室产生的 数据来预测带钢在轧机下的热响应 条件将被开发，预测将被比较， 钢铁行业提供的数据。

The objective of the proposed investigation is to address fundamental issues related to the cooling of high temperature, high heat flux surfaces by liquid jet impingement. In recent years such cooling methods have been widely used in the processing of primary metals such as steel and aluminum. Of concern is the delineation of regions associated with single phase forced convection, forced convection nucleate boiling, and film boiling on a heated plate exposed to a single jet of an array of jets. Local heat transfer measurements will be used to determine convection coefficients in single and two- phase flow regimes. Parameters to be studied include hydrodynamic and geometrical features of the jet and jev arrays. To assess the applicability of basic results inferred from laboratory studies, models that use laboratory-generated data to predict the thermal response of strip steel under mill conditions will be developed, and predictions will be compared to mill data provided by the steel industry.