暂态过程中液柱分离的探讨

Iovestigation of Column Separation during Transients

本文首先介绍了我们对水平管道系统中的液柱分离现象所作的实验。实验结果表明:汽化压力不是产生液柱分离的充分条件;伴随着液柱分离还有众多的小空泡生成和溃灭。在实验的基础上,我们提出了新的计算模型,称之为临界大空穴模型。利用此模型对暂态过程中的液柱分离现象及其影响进行了计算,其结果与所作的实验基本上是吻合的。

In the paper, the experiment, in which the column separation phenomenon in the horizontal duct is investigated, is presented. The experimental results indicate that vapour pressure is not the sufficient condition under which column separation occurs, and that a number of small cavities grow and collapse when liquid column is separated. Based on the experiment, a new computational model--the large critical cavity model is proposed. Column separation phenomenon and its influence during transients are calculated using this model. The calculational results are basically coincident with the experimental ones.