Numerical Analysis of Flow-Induced Vibration of Deep-Hole Plane Steel Gate in Partial Opening Operation

Jinyu Li, Chen Wang, Zhengzhong Wang (), Kailin Ren, Yuling Zhang, Chao Xu and Dongfeng Li
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Jinyu Li: Department of Water Resources and Hydropower Engineering, College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Xianyang 712100, China
Chen Wang: Department of Water Resources and Hydropower Engineering, College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Xianyang 712100, China
Zhengzhong Wang: Department of Water Resources and Hydropower Engineering, College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Xianyang 712100, China
Kailin Ren: Department of Water Resources and Hydropower Engineering, College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Xianyang 712100, China
Yuling Zhang: Department of Water Resources and Hydropower Engineering, College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Xianyang 712100, China
Chao Xu: Department of Water Resources and Hydropower Engineering, College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Xianyang 712100, China
Dongfeng Li: Department of Water Resources and Hydropower Engineering, College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Xianyang 712100, China

Sustainability, 2022, vol. 14, issue 20, 1-17

Abstract: Hydraulic steel gates are the core adjustment mechanism for water conservancy projects, the safety of which is related to the safety of the entire water conservancy project. In this study, the issue of flow-induced vibration under the influence of pulsing water pressure when the deep-hole plane steel gate construction is partially opened is investigated using a numerical calculation approach of CFD–CSD coupling. The time-history pulsating pressure loads of each part are first determined by tracking the upstream, bottom, and downstream pulsating water pressure loads under partially open operation conditions of the gate. The impact of the water in front of the gate on the natural vibration mode and frequency of the gate is then investigated based on the analysis of the dry/wet modes of the gate structure. Additionally, the hydrodynamic load is applied to the finite element model of the gate structure while taking into account the fluid–structure coupling effect, and the results of the gate flow-induced vibration response are obtained. Three typical local opening relative openings are chosen, with the operating state of the design water head (Hs = 70 m) of a deep-hole plane steel gate as an example. According to the analysis’s findings, the gate’s natural vibration frequency is greatly lowered under the influence of the water in front of it, and its amplitude increases by 50%. The pressure value pressing on the gate changes dynamically as it is partially opened and discharged. The maximum dynamic displacement value and the maximum dynamic stress value of the gate both appear in the middle and lower part of the gate under the condition of partial opening, and both occur when the relative opening is e/H = 0.125. The maximum displacement value is 3.43 mm, and the maximum stress value is 161 MPa. The maximum dynamic displacement and dynamic stress of each gate component steadily decrease with an increase in the relative openness. The gate dynamic response analysis approach described in this research can serve as a guide for hydraulic engineering design.

Keywords: deep-hole plane steel gate; numerical analysis; dynamic characteristics; hydrodynamic load; dynamic response (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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