Analysis of the Water Hammer Effect and Structural Response Characteristics in the Fire-Resistant Oil System of Gas Turbine Units.
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| Title: | Analysis of the Water Hammer Effect and Structural Response Characteristics in the Fire-Resistant Oil System of Gas Turbine Units. |
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| Authors: | Zhou, Guangjie1 (AUTHOR), Ma, Qiang1,2 (AUTHOR), Xue, Sufeng2,3 (AUTHOR), Wang, Gang1 (AUTHOR), Jia, Lijun1,2 (AUTHOR), Yang, Kaimin3 (AUTHOR) yangkaimin@sdjzu.edu.cn |
| Source: | Energies (19961073). Jan2026, Vol. 19 Issue 1, p147. 17p. |
| Subjects: | Water hammer, Gas turbines, Computational fluid dynamics, Pressure regulators, Mechanics (Physics), Dynamic pressure, Acoustic wave propagation |
| 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. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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