Experimental optimization of gate opening modes to minimize near-field vibration induced by releasing flood with hydraulic experiments

Abstract

Multi-Horizontal-Submerged Jets are successfully applied to dissipate energy within a large-scale hydropower station. However, notable near-field vibrations are generated when releasing high discharges through the gates, which is generally typical in a flooding case scenario. Under these conditions, the magnitude of the vibrations varies when applying different gate-opening modes. To investigate and find optimized gate-opening modes to reduce the near-field vibration, multiple combinations were tested by varying gate-opening modes and hydraulic conditions. For each of the tests conducted, fluctuating pressures acting on side-walls and bottoms of a stilling basin were measured. The collected datasets were used to determine the maximum and minimum fluctuating pressure values associated with the correspondent gate-opening mode and a detailed comparison between each of the gate-opening modes was completed. The paper presents the quantitative analysis of the discharge ratio’s effect on fluctuating pressures. It also investigates the influence of different gate-opening modes by including side to middle spillways and upper to lower spillways configurations. The flow pattern evolutions triggered by each different gate-opening mode are discussed and optimal configurations that minimize near-field vibrations at high discharges are recommended to support both the design of new systems and assessment of the performance of existing ones.

Publication DOI: https://doi.org/10.3390/w10101435
Divisions: College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Civil Engineering
Additional Information: Copyright © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Uncontrolled Keywords: multi-horizontal submerged jets,energy dissipation,near-field vibration,fluctuating pressure,gate-opening modes,SDG 9 - Industry, Innovation, and Infrastructure,SDG 11 - Sustainable Cities and Communities,SDG 13 - Climate Action
Publication ISSN: 2073-4441
Last Modified: 26 Mar 2025 08:12
Date Deposited: 14 Jan 2025 12:41
Full Text Link:
Related URLs: https://www.mdp ... 4441/10/10/1435 (Publisher URL)
PURE Output Type: Article
Published Date: 2018-10
Published Online Date: 2018-10-12
Accepted Date: 2018-10-10
Authors: Peng, Yong
Zhang, Jianming
Xu, Weilin
Rubinato, Matteo (ORCID Profile 0000-0002-8446-4448)

Download

[img]

Version: Published Version

License: Creative Commons Attribution

| Preview

Export / Share Citation


Statistics

Additional statistics for this record