The Connection between flow pattern evolution and vibration in 90‐degree pipeline: Bidirectional fluid‐structure interaction

Liang, Ze-jun; Guo, Chunyu; Wang, Chunsheng

doi:10.1002/ese3.1031

Cited by 14 publications

(5 citation statements)

References 39 publications

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“…The results suggested that the maximum error of the natural frequency of the pipeline system considering the fluid–solid coupling effect is 9.66%, which proves that the model can better simulate the dynamic characteristics of the pipeline system. Liang et al (2022) examined the vibration characteristics of the elbow under two-phase flow by using the two-way fluid–solid coupling method. The results indicate that the vibration amplitude of the elbow centre is the largest, and the Y -direction corresponds to the strongest direction of the triaxial vibration.…”

Section: Introductionmentioning

confidence: 99%

Research on vibration characteristics of rocket engine flow pipeline

Yong,

Wu-Qi

2024

AEAT

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Purpose Abnormal vibrations often occur in the liquid oxygen kerosene transmission pipelines of rocket engines, which seriously threaten their safety. Improper handling can result in failed rocket launches and significant economic losses. Therefore, this paper aims to examine vibrations in transmission pipelines. Design/methodology/approach In this study, a three-dimensional high-pressure pipeline model composed of corrugated pipes, multi-section bent pipes, and other auxiliary structures was established. The fluid–solid coupling method was used to analyse vibration characteristics of the pipeline under various external excitations. The simulation results were visualised using MATLAB, and their validity was verified via a thermal test. Findings In this study, the vibration mechanism of a complex high-pressure pipeline was examined via a visualisation method. The results showed that the low-frequency vibration of the pipe was caused by fluid self-excited pressure pulsation, whereas the vibration of the engine system caused a high-frequency vibration of the pipeline. The excitation of external pressure pulses did not significantly affect the vibrations of the pipelines. The visualisation results indicated that the severe vibration position of the pipeline thermal test is mainly concentrated between the inlet and outlet and between the two bellows. Practical implications The results of this study aid in understanding the causes of abnormal vibrations in rocket engine pipelines. Originality/value The causes of different vibration frequencies in the complex pipelines of rocket engines and the propagation characteristics of external vibration excitation were obtained.

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Section: Introductionmentioning

confidence: 99%

Research on vibration characteristics of rocket engine flow pipeline

Yong,

Wu-Qi

2024

AEAT

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“…The model established by the thermomechanical consistency framework could accurately describe the internal structure of the fluid, and the results showed that the method better described the frictional coupling mechanism between the fluid and the solid, as well as the distribution of shear stress in a non-constant fluid. Liang [23] used a simultaneous two-thread analysis method to analyze the dynamic characteristics of the elbow considering fluid-solid coupling. It elucidated the vibration variation law caused by the gas-liquid two-phase flow in the elbow.…”

Section: Introductionmentioning

confidence: 99%

Seismic Response of Cable-Stayed Spanning Pipeline Considering Medium-Pipeline Fluid–Solid Coupling Dynamic Effect

Weng

Xie

et al. 2023

Processes

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With the aim of determining the influence of the fluid–structure coupling dynamic effect of the oil and gas transmission medium and pipeline on the seismic response, an oil pipeline supported by a cable-stayed spanning structure was taken as the study object. Kinetic equations taking into account the action of oil and gas medium were studied, and a finite element model structure considering the additional-mass method and the fluid–structure coupling effect were established separately. In addition, the mechanism of the oil–gas–pipeline coupling action on the seismic response of pipeline structure was analyzed, and the results were obtained. The results show that the pipeline has a minimal seismic response at the abutment location, the seismic response gradually increases along the abutment to the main tower, and the seismic response reach is maximized at about one-fifth of the bridge platform. The seismic response of the oil and gas pipeline model structure using the additional-mass method is generally more significant than that based on the fluid–solid coupled dynamic model; moreover, the maximum displacement response differs by about 24%, and the maximum acceleration response differs by approximately 30%, indicating that the oil and gas medium has a certain viscoelastic damping effect on the seismic response of the oil pipeline, which provides a reference for the seismic response calculation theory and analysis method of cable-stayed spanning oil pipelines.

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“…The numerical analysis results show that the novel MVIMD with parameters optimized by the genetic algorithm has better effects for controlling both horizontal and vertical vibration responses of pipelines. Z Liang [11] finds that the unique modal frequencies of each order are applied to the elbow to obtain different exclusive mode shapes. The evolution of the flow pattern is related to the increase in wave height, and the wave amplitude often depends on the gas-liquid superficial velocity.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Vibration Characteristics of Cross-Type Hydraulic Pipeline Based on Finite Element Method

Liu,

Li,

et al. 2023

Applied Sciences

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Branched hydraulic lines are prone to leakage and break under complex working conditions. The coupling vibration problem caused by the fluid pressure beat and external mechanical excitation of the pump at the junction of the branch of the cross-type hydraulic pipeline is very common. So a method combining finite element simulation and fluid-structure interaction vibration experiments is proposed for research. First, the possibility of the finite element method in solving the pipeline vibration problem is verified, and then the modal analysis and harmonious response analysis of the cross-type pipe are carried out to discuss the influence of fluid pressure and solid elastic modulus on pipeline vibration. The results show that as the fluid pressure and pipeline elastic modulus change, different modes of different orders will be affected. Under external excitation, only a portion of the order is sensitive to external excitation.

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The Connection between flow pattern evolution and vibration in 90‐degree pipeline: Bidirectional fluid‐structure interaction

Cited by 14 publications

References 39 publications

Research on vibration characteristics of rocket engine flow pipeline

Research on vibration characteristics of rocket engine flow pipeline

Seismic Response of Cable-Stayed Spanning Pipeline Considering Medium-Pipeline Fluid–Solid Coupling Dynamic Effect

Analysis of Vibration Characteristics of Cross-Type Hydraulic Pipeline Based on Finite Element Method

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