Convection and Boiling in Narrow Channels

摘要 主要研究人员建议进行一项实验研究的强制对流沸腾流动通过通道的高度为毫米。 流动将是流体动力学和热发展。 将收集单相流、沸腾起始和导致临界热通量的条件的传热数据。 为先前池沸腾研究开发的液晶温度记录仪将用于获得试验通道整个加热段的温度分布。 液晶数据将提供有关沸腾前沿发展的时空信息。 根据实验数据，在不同的流动状态下的传热的关联式将被开发。

ABSTRACT The Principal Investigators propose to conduct an experimental study of forced convective boiling flow through channels that are of millimeters in height. The flow will be hydrodynamically and thermally developing. Heat transfer data will be collected for single-phase flow, boiling incipience, and conditions leading up to the critical heat flux. A liquid crystal thermograph developed for a previous pool boiling study will be used to obtain temperature profiles for the entire heated section of the test channel. The liquid crystal data will provide spatiotemporal information concerning the development of the boiling front. Based on the experimental data, correlations for heat transfer in the different flow regimes will be developed.