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Abstract <p>The study investigates the short-time injection of gas under pressure ranging from 10 to 40&#xa0;bar through a 6 mm hole from a fixed volume (30 and 70 mL) into an assembly of 85 vertical rods. Dynamic pressure sensors were used to obtain data on pressure oscillations in the system. It was shown that an increase in the initial pressure leads to an increase in oscillations in the system. It was found that the maximum pressure drop occurs at the moment when gas flows out of the fixed volume at the highest speed. It was found that an increase in the flow volume affects the amplitude of oscillations in the range up to 10 bar. At high injection pressures, the volume effect disappears, which is associated with gas locking.</p>

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Pressure Drop during Short-Time Gas Injection in a Vertical Rod Bundle

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • N. A. Pribaturin,
  • I. A. Evdokimenko,
  • P. D. Lobanov,
  • D. E. Legostaev,
  • K. A. Filippskii,
  • N. A. Gulyaev,
  • A. I. Svetonosov

摘要

Abstract

The study investigates the short-time injection of gas under pressure ranging from 10 to 40 bar through a 6 mm hole from a fixed volume (30 and 70 mL) into an assembly of 85 vertical rods. Dynamic pressure sensors were used to obtain data on pressure oscillations in the system. It was shown that an increase in the initial pressure leads to an increase in oscillations in the system. It was found that the maximum pressure drop occurs at the moment when gas flows out of the fixed volume at the highest speed. It was found that an increase in the flow volume affects the amplitude of oscillations in the range up to 10 bar. At high injection pressures, the volume effect disappears, which is associated with gas locking.