Scholarlink

<p>As critical components of hydraulic structures, radial gates experience complex flow patterns during operation, inducing hydrodynamic loads that may threaten structural stability. This study investigates the flow characteristics around the radial gates under different conditions by using Particle Image Velocimetry (PIV) test in a laboratory flume. It is found that three key zones emerged behind the gate: a high-velocity jet zone, a shear layer marked by a velocity gradient, and a recirculation zone with reverse flow. The downstream water depth critically controls the evolution of these flow zones. Turbulence intensity peaks within the jet zone, decaying progressively across the shear layer. The flow self-similar is exhibited in the far-field region. Energy analysis reveals that large-scale vortex structures govern the kinetic energy distribution. These findings enhance our understanding of flow regimes near radial gates and support the optimization of gate designs for improved stability.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Turbulence characteristics and energy distribution in hydraulic jumps downstream of radial gates: a PIV analysis

  • 期刊论文

  • 发表日期：

    2025年11月29日

查看全文
  • Liang Zhong,
  • Xin Guan,
  • Jinyang Liu,
  • Yuheng Wu

摘要

As critical components of hydraulic structures, radial gates experience complex flow patterns during operation, inducing hydrodynamic loads that may threaten structural stability. This study investigates the flow characteristics around the radial gates under different conditions by using Particle Image Velocimetry (PIV) test in a laboratory flume. It is found that three key zones emerged behind the gate: a high-velocity jet zone, a shear layer marked by a velocity gradient, and a recirculation zone with reverse flow. The downstream water depth critically controls the evolution of these flow zones. Turbulence intensity peaks within the jet zone, decaying progressively across the shear layer. The flow self-similar is exhibited in the far-field region. Energy analysis reveals that large-scale vortex structures govern the kinetic energy distribution. These findings enhance our understanding of flow regimes near radial gates and support the optimization of gate designs for improved stability.