Vibration analysis for a parallel fluid-filled pipelines-casing model considering casing flexibility

Guo, Xumin; Cao, Yiming; Ma, Hui; Li, Hui; Wang, Bo; Han, Qingkai; Wen, Bangchun

doi:10.1016/j.ijmecsci.2022.107606

Cited by 15 publications

(1 citation statement)

References 61 publications

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“…2020; Guo et al. 2022). However, these methods do not consider the fluid flow mechanism within the pipeline, and it remains fundamentally impossible to eliminate the instability of the internal flow field.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic metamaterial redirector for steering fluid flow in pipelines with arbitrary curvatures

Pang,

You,

Chen

2024

J. Fluid Mech.

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The dynamics of fluid-conveying pipelines with different shapes has received extensive research attention. Significant wall shear stress and flow separation occur when the fluid flows through pipelines with various curvatures. These phenomena trigger pipeline vibration, the generation of mechanical and hydrodynamic noise, damage, and even the rupture of the pipeline. However, previous studies have not considered the mechanism of internal pipeline flow to eliminate flow separation and the generation of secondary flow inside bent pipelines by redirecting and manipulating the flow. To steer the fluid flow, a ‘hydrodynamic transformation strategy’ based on the metamaterial technology is proposed for the first time in this work; through this strategy, the fluid in pipelines can be made to flow along trajectories that are always parallel to the central axis of the bent pipelines. Interestingly, this innovative method can effectively eliminate the elbow-induced secondary flow and prevent the generation of a pressure gradient toward the pipeline wall. Using the soft lithography technology or the three-dimensional printing technology, the hydrodynamic metamaterial microstructure required to manipulate the fluid flow path in actual engineering applications can be achieved. Our work paves the way for developing new approaches for controlling the flow characteristics and reducing the turbulence intensity of the fluid flowing in pipelines with elbows and corners.

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Section: Introductionmentioning

confidence: 99%

Hydrodynamic metamaterial redirector for steering fluid flow in pipelines with arbitrary curvatures

Pang,

You,

Chen

2024

J. Fluid Mech.

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Adjacent mode resonance of a hydraulic pipe system consisting of parallel pipes coupled at middle points

Fan

Zhu

Mao

et al. 2023

Appl. Math. Mech.-Engl. Ed.

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Dynamic modeling of fluid-conveying pipes restrained by a retaining clip

Dou¹,

Ding²,

Mao³

et al. 2023

Appl. Math. Mech.-Engl. Ed.

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Although most pipes are restrained by retaining clips in aircrafts, the influence of the clip parameters on the vibration of the fluid-conveying pipe has not been revealed. By considering the clip width, a new dynamic model of a fluid-conveying pipe restrained by an intermediate clip is established in this paper. To demonstrate the necessity of the proposed model, a half pipe model is established by modeling the clip as one end. By comparing the two models, it is found that the half pipe model overestimates the critical velocity and may estimate the dynamical behavior of the pipe incorrectly. In addition, with the increase in the clip stiffness, the conversion processes of the first two modes of the pipe are shown. Furthermore, by ignoring the width of the clip, the effect of the flow velocity on the accuracy of a concentrated restraint clip model is presented. When the flow velocity is close to the critical velocity, the accuracy of the concentrated restraint clip model significantly reduces, especially when the width of the clip is large. In general, the contribution of this paper is to establish a dynamic model of the fluid-conveying pipe which can describe the influence of the clip parameters, and to demonstrate the necessity of this model.

show abstract

Vibration analysis for a parallel fluid-filled pipelines-casing model considering casing flexibility

Cited by 15 publications

References 61 publications

Hydrodynamic metamaterial redirector for steering fluid flow in pipelines with arbitrary curvatures

Hydrodynamic metamaterial redirector for steering fluid flow in pipelines with arbitrary curvatures

Adjacent mode resonance of a hydraulic pipe system consisting of parallel pipes coupled at middle points

Dynamic modeling of fluid-conveying pipes restrained by a retaining clip

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