Condensation induced water hammer – overview and own experiments
Condensation induced water hammer – overview and own experiments
复制标题
冷凝引起的水锤 – 概述和自己的实验
DOI：
10.3139/124.110242
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
A. Malcherek
中科院分区：
文献类型：
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作者：
S. Dirndorfer;M. Doerfler;H. Kulisch;A. Malcherek
摘要凝结水锤是一种严重的水击现象，已在世界范围内造成了严重的破坏甚至死亡。这种影响不仅限于核工业。一般来说，它可以发生在每一根含有水和蒸汽的管道中(两相流)。到目前为止，已经进行了许多实验来研究这一现象并验证现有的水击程序。但理论和测量结果显示出很大程度的偏差。通过文献综述获得有关这些实验的信息。这一信息还被提供给一个测试设备，该设备是为了产生水锤而开发的。本文介绍了该测试装置，并对其主要功能作了简要说明。与其他实验不同，UniBw的水锤是在受控条件下进行的。水中的空气是一个破坏性的参数，会导致理论系统代码和实验测量之间的严重偏差。在本文介绍的测试装置中，使用不含空气的去离子水，排除了这种影响。此外，水锤的起源是由一位科学家控制的。实验结果将表征测试装置的动态响应随系统压力、充注度和过冷度的函数。
Abstract A condensation induced water hammer is a severe effect that has caused damages and even fatalities worldwide. This effect is not limited to the nuclear industry only. Generally it can occur in every pipe that contains water and steam (two-phase-flow). To date many experiments were executed to study this phenomenon and to validate existing water hammer codes. But theoretically versus measured results show a very high degree of deviation. Information about those experiments was obtained by literature review. This information is presented additionally to a test facility, which has been developed in order to generate water hammers. The test device is introduced in this paper and its main functions are briefly explained. In contrast to other experiments, water hammers at the UniBw are performed under controlled conditions. Air in water is a disruptive parameter that causes vigorous deviations between the theoretical system code and the experimental measurements. As in the test device presented in this paper, deionised water without air is used, this effect is ruled out. Furthermore the inception of a water hammer is controlled by a scientist. The experimental results will characterise the dynamic response of the test device as a function of system pressure, filling degree and sub-cooling.