Publications Repository - Gdańsk University of Technology

The goal of the paper is twofold: firstly, it presents computational fluid dynamics analysis for finding maximum unsteady flow forces (and their frequencies) acting on a thermo-well for measuring steam temperature in a steam turbine control stage and secondly, it presents computational solid dynamics analysis of possibility of entry into resonance of the thermowell structure. There have been analyzed two cases of flow with changing temperature, pressure, and mass flow rate in the control stage chamber of a turbine high-pressure cylinder. The problem is also described in the ASME standard PTC19.3 TW-2010 providing detailed guidelines for thermo-well calculations. The problem under consideration is only a part of whole technical analysis and obeys a primary hypothesis that a reason of the thermo-well damage was a resonance phenomenon.

Authors

• Mariusz Banaszkiewicz,
• prof. Janusz Badur,
• Sebastian Kornet,
• mgr inż. Daniel Sławiński,
• mgr inż. Bartosz Kraszewski,
• dr inż. Paweł Ziółkowski link open in new tab ,
• Anna Rehmus-Forc,
• Grzegorz Bzymek