Cavitation induced vibrations in valves

The purpose of this study is to experimentally investigate cavitation and flow-induced vibrations in partially closed valves, and to generate highquality experimental data. This data is intended to support the validation and improvement of Computational Fluid Dynamics models.

The results show that strong cavitation significantly increases vibration levels, particularly for globe valves, while butterfly valves are less sensitive. The study provides valuable experimental data and improved understanding, supporting more reliable modelling and assessment of valve performance. 

This report forms the results of a project performed within the Energiforsk Vibrations in Nuclear Applications Program, which is financed by Vattenfall, Uniper, Fortum, TVO, Skellefteå Kraft and Karlstads Energi. The Vibrations in program aims to increase the knowledge of causes, monitoring and mitigation of vibrations, thereby contributing to the safety, maintenance and development of a diverse range of machinery in the Nordic nuclear power plants.