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<p>Pipeline leakage detection plays a crucial role in ensuring the safe operation of pipelines. In view of the applicability and accuracy of the existing methods, a multi-physics field coupling problem for analyzing the pressure pulsation signal characteristics of pipeline leakage by using simulation and experimental methods is proposed. To study the changes in the flow field of the leakage hole and the characteristics of the pressure pulsation signal, computational fluid dynamics (CFD) is adopted to analyze the changes in the velocity field and vorticity field in the leakage hole area; the experimental platform is established to analyze the influence of the diameter of the leakage hole, pipeline pressure, and leakage angle on the characteristics of the pipeline leakage pressure pulsation signal. The results show that as the pipeline pressure increases from 0.6 to 1.0&#xa0;MPa, the maximum flow velocity of the leakage hole gradually increases. From the height of the pipeline center, the change values of the maximum flow velocity are 32.95&#xa0;m/s, 38.14&#xa0;m/s, and 42.63&#xa0;m/s, respectively. As the leakage angle increases from 30 to 90°, the characteristic frequency of the pressure pulsation signal in the experimental conditions also increases, which are 100.02&#xa0;Hz, 150.82&#xa0;Hz, and 300.07&#xa0;Hz, respectively.</p>

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Research on the Flow Field Mechanism and Pressure Pulse Characteristics of Leakage in Heating Pipes

  • 期刊论文

  • 发表日期：

    2025年8月26日

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  • Guorong Wang,
  • Yongxing Song,
  • Yuxin Wang,
  • Qiang Liu,
  • Lin Liu,
  • Linhua Zhang,
  • Yi Ge

摘要

Pipeline leakage detection plays a crucial role in ensuring the safe operation of pipelines. In view of the applicability and accuracy of the existing methods, a multi-physics field coupling problem for analyzing the pressure pulsation signal characteristics of pipeline leakage by using simulation and experimental methods is proposed. To study the changes in the flow field of the leakage hole and the characteristics of the pressure pulsation signal, computational fluid dynamics (CFD) is adopted to analyze the changes in the velocity field and vorticity field in the leakage hole area; the experimental platform is established to analyze the influence of the diameter of the leakage hole, pipeline pressure, and leakage angle on the characteristics of the pipeline leakage pressure pulsation signal. The results show that as the pipeline pressure increases from 0.6 to 1.0 MPa, the maximum flow velocity of the leakage hole gradually increases. From the height of the pipeline center, the change values of the maximum flow velocity are 32.95 m/s, 38.14 m/s, and 42.63 m/s, respectively. As the leakage angle increases from 30 to 90°, the characteristic frequency of the pressure pulsation signal in the experimental conditions also increases, which are 100.02 Hz, 150.82 Hz, and 300.07 Hz, respectively.