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Energies
Volume 19
Issue 1
10.3390/en19010147
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Analysis of the Water Hammer Effect and Structural Response Characteristics in the Fire-Resistant Oil System of Gas Turbine Units

by
Guangjie Zhou
1,
Qiang Ma
1,
Sufeng Xue
2,
Gang Wang
1,
Lijun Jia
1 and
Kaimin Yang
3,*
1
Shandong Electric Power Engineering Consulting Institute Corp., Ltd., Jinan 250199, China
2
China United Gas Turbine Technology Co., Ltd., Beijing 100016, China
3
School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China
*
Author to whom correspondence should be addressed.
Energies 2026, 19(1), 147; https://doi.org/10.3390/en19010147 (registering DOI)
Submission received: 3 November 2025 / Revised: 13 December 2025 / Accepted: 18 December 2025 / Published: 26 December 2025
Versions Notes

Abstract

In gas turbine fire-resistant oil systems, valve actuations induce transient pressure fluctuations and the water hammer effect, causing pressure oscillations and structural vibrations. This study uses a coupled CFD and transient structural simulation to analyze the effects of different valve strategies on pressure wave propagation and structural response. Results show that a higher valve opening rate leads to a more significant water hammer effect, increasing structural deformation and stress. The maximum equivalent stress was verified at 201.9 MPa, maintaining a 30% safety margin and meeting American Society of Mechanical Engineers (ASME) B31.3 requirements. Finally, a “slow-fast-slow” (S-shaped) valve strategy is proposed to significantly improve the system’s pressure response characteristics, providing theoretical and engineering guidance for safe operation.
Keywords: gas turbine units; operational reliability of oil system; valve opening control; water hammer effect; transient structural response gas turbine units; operational reliability of oil system; valve opening control; water hammer effect; transient structural response

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MDPI and ACS Style

Zhou, G.; Ma, Q.; Xue, S.; Wang, G.; Jia, L.; Yang, K. Analysis of the Water Hammer Effect and Structural Response Characteristics in the Fire-Resistant Oil System of Gas Turbine Units. Energies 2026, 19, 147. https://doi.org/10.3390/en19010147

AMA Style

Zhou G, Ma Q, Xue S, Wang G, Jia L, Yang K. Analysis of the Water Hammer Effect and Structural Response Characteristics in the Fire-Resistant Oil System of Gas Turbine Units. Energies. 2026; 19(1):147. https://doi.org/10.3390/en19010147

Chicago/Turabian Style

Zhou, Guangjie, Qiang Ma, Sufeng Xue, Gang Wang, Lijun Jia, and Kaimin Yang. 2026. "Analysis of the Water Hammer Effect and Structural Response Characteristics in the Fire-Resistant Oil System of Gas Turbine Units" Energies 19, no. 1: 147. https://doi.org/10.3390/en19010147

APA Style

Zhou, G., Ma, Q., Xue, S., Wang, G., Jia, L., & Yang, K. (2026). Analysis of the Water Hammer Effect and Structural Response Characteristics in the Fire-Resistant Oil System of Gas Turbine Units. Energies, 19(1), 147. https://doi.org/10.3390/en19010147

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