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<p>In energy production, steam leakage is highly hazardous. Though advanced research has used jet noise for leak detection, studies on steam jet flow and acoustic characteristics are scarce. This study numerically modeled supersonic superheated steam jets via large eddy simulation, examining upstream pressure and temperature effects on flow and jet noise. It captured 16.8–48.8 kHz upstream-propagating broadband shock noise and downstream-propagating turbulent mixing noise, validating acoustic detection feasibility. Jet-generated vortex rings cause turbulent mixing noise, while their interaction with shock surfaces produces broadband shock noise. Simulations also reveal two distinct flow regimes. As upstream initial pressure increased, the Mach number and shock cell length increased, amplifying noise levels. Temperature had a limited effect on jet penetration length and turbulent mixing noise levels, yet it elevated the frequency and amplitude of the first peak of broadband shock noise. This study can offer theoretical guidance for steam leakage monitoring.</p>

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Flow field and noise study of supersonic superheated steam jet based on large eddy simulation

  • 期刊论文

  • 发表日期：

    2026年4月24日

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  • Zihua Liu,
  • Shun Wang,
  • Zhikang Lin,
  • Peng Yu,
  • Dalin Zhang,
  • Hanyan Luo,
  • Hao Sun,
  • Di Wang

摘要

In energy production, steam leakage is highly hazardous. Though advanced research has used jet noise for leak detection, studies on steam jet flow and acoustic characteristics are scarce. This study numerically modeled supersonic superheated steam jets via large eddy simulation, examining upstream pressure and temperature effects on flow and jet noise. It captured 16.8–48.8 kHz upstream-propagating broadband shock noise and downstream-propagating turbulent mixing noise, validating acoustic detection feasibility. Jet-generated vortex rings cause turbulent mixing noise, while their interaction with shock surfaces produces broadband shock noise. Simulations also reveal two distinct flow regimes. As upstream initial pressure increased, the Mach number and shock cell length increased, amplifying noise levels. Temperature had a limited effect on jet penetration length and turbulent mixing noise levels, yet it elevated the frequency and amplitude of the first peak of broadband shock noise. This study can offer theoretical guidance for steam leakage monitoring.