Experimental and Numerical Study on Pressure Losses and Pressure Fluctuations in a Valve Assembly with Three Control Valves in One Chamber

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F25%3A00640664" target="_blank" >RIV/61388998:_____/25:00640664 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.29008/ETC2025-130" target="_blank" >http://dx.doi.org/10.29008/ETC2025-130</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.29008/ETC2025-130" target="_blank" >10.29008/ETC2025-130</a>

Result language
angličtina
Original language name
Experimental and Numerical Study on Pressure Losses and Pressure Fluctuations in a Valve Assembly with Three Control Valves in One Chamber
Original language description
This paper presents a study of the flow field in an up-to-date model of a modern high-pressure valve assembly used for nozzle-governing turbines with outputs lower than 50 MW. This assembly consists of one stop valve and three control valves connected by the so-called lift bar. The study aims to evaluate and compare pressure losses and flow instabilities in each control valve. Numerical simulations have been carried out in the Doosan Skoda Power company using the Ansys CFX software tool to complement the results. Measurements have been carried out in the Aerodynamic laboratory of the Institute of Thermomechanics of the Czech Academy of Sciences, where an aerodynamic tunnel is installed. The measurement results are compared with the numerical results in the form of pressure loss prediction. The measured pressure fluctuations are utilized to define a border, in terms of operating conditions, where the flow field starts to be unstable. Therefore, the areas of safety and dangerous operational reliability can be predicted.
Czech name
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Czech description
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Project
<a href="/en/project/TN02000025" target="_blank" >TN02000025: National Centre for Energy II</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
16th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2025
ISBN
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ISSN
2410-4833
e-ISSN
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Number of pages
10
Pages from-to
212924
Publisher name
Leibniz Universität Hannover
Place of publication
Hanover
Event location
Hannover
Event date
Mar 24, 2025
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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