Applied Mathematics and Mechanics (English Edition) ›› 2022, Vol. 43 ›› Issue (11): 1657-1674.doi: https://doi.org/10.1007/s10483-022-2916-6

• 论文 • 上一篇    下一篇

Investigation on two-phase flow-induced vibrations of a piping structure with an elbow

Heng SU, Yegao QU, Guoxu WANG, Zhike PENG   

  1. State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China
  • 收稿日期:2022-04-04 修回日期:2022-06-18 发布日期:2022-10-29
  • 通讯作者: Yegao QU, E-mail: quyegao@sjtu.edu.cn
  • 基金资助:
    The National Natural Science Foundation of China (Nos. U2141244, 11922208, 11932011, and 12121002), the National Science and Technology Major Project of the Ministry of Science and Technology of China (No. 2019ZX06004001), and the Oceanic Interdisciplinary Program of Shanghai Jiao Tong University of China (No. SL2021ZD104)

Investigation on two-phase flow-induced vibrations of a piping structure with an elbow

Heng SU, Yegao QU, Guoxu WANG, Zhike PENG   

  1. State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2022-04-04 Revised:2022-06-18 Published:2022-10-29
  • Contact: Yegao QU, E-mail: quyegao@sjtu.edu.cn
  • Supported by:
    The National Natural Science Foundation of China (Nos. U2141244, 11922208, 11932011, and 12121002), the National Science and Technology Major Project of the Ministry of Science and Technology of China (No. 2019ZX06004001), and the Oceanic Interdisciplinary Program of Shanghai Jiao Tong University of China (No. SL2021ZD104)

摘要: The dynamic behaviors of a horizontal piping structure with an elbow due to the two-phase flow excitation are experimentally investigated. The effects of flow patterns and superficial velocities on the pressure pulsations and vibration responses are evaluated in detail. A strong partition coupling algorithm is used to calculate the flow-induced vibration (FIV) responses of the pipe, and the theoretical values agree well with the experimental results. It is found that the lateral and axial vibration responses of the bend pipe are related to the momentum flux of the two-phase flow, and the vibration amplitudes of the pipe increase with an increase in the liquid mass flux. The vertical vibration responses are strongly affected by the flow pattern, and the maximum response occurs in the transition region from the slug flow to the bubbly flow. Moreover, the standard deviation (STD) amplitudes of the pipe vibration in three directions increase with an increase in the gas flux for both the slug and bubbly flows. The blockage of liquid slugs at the elbow section is found to strengthen the vibration amplitude of the bend pipe, and the water-blocking phenomenon disappears as the superficial gas velocity increases.

关键词: slug/bubbly flow, flow-induced vibration (FIV), fluid-structure interaction, bend pipe

Abstract: The dynamic behaviors of a horizontal piping structure with an elbow due to the two-phase flow excitation are experimentally investigated. The effects of flow patterns and superficial velocities on the pressure pulsations and vibration responses are evaluated in detail. A strong partition coupling algorithm is used to calculate the flow-induced vibration (FIV) responses of the pipe, and the theoretical values agree well with the experimental results. It is found that the lateral and axial vibration responses of the bend pipe are related to the momentum flux of the two-phase flow, and the vibration amplitudes of the pipe increase with an increase in the liquid mass flux. The vertical vibration responses are strongly affected by the flow pattern, and the maximum response occurs in the transition region from the slug flow to the bubbly flow. Moreover, the standard deviation (STD) amplitudes of the pipe vibration in three directions increase with an increase in the gas flux for both the slug and bubbly flows. The blockage of liquid slugs at the elbow section is found to strengthen the vibration amplitude of the bend pipe, and the water-blocking phenomenon disappears as the superficial gas velocity increases.

Key words: slug/bubbly flow, flow-induced vibration (FIV), fluid-structure interaction, bend pipe

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