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本文介绍了我国第一台用以研究过饱和水蒸汽自发凝结现象的拉伐尔喷管试验装置.阐述了它的设计思想、主要特性以及取得试验数据的基本方法.在试验基础上定量地提出了考虑喷管内的流动损失时Wilson点位置的确定方法.提供了关于出现过饱和水蒸汽自发凝结现象的湿蒸汽两相流的部分试验结果.
This paper introduces the first Laval nozzle test device in our country to study the phenomenon of spontaneous condensation of supersaturated water vapor, and expounds its design idea, main characteristics and the basic method of obtaining test data. A method to determine the Wilson point at which flow losses within a nozzle are considered provides some experimental results on a wet steam two-phase flow in which spontaneous condensation of supersaturated water vapor occurs.