Flow-induced vibration: recent findings and open questions

Pettigrew, M. J.; Taylor, C. E.; Fisher, N. J.; Yetisir, M.; Smith, Bruce A.

doi:10.1016/s0029-5493(98)00238-6

Cited by 123 publications

(58 citation statements)

References 11 publications

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“…The theoretical models have provided some useful insights to the phenomenon. However, as noted by Pettigrew et al (1998), Paidoussis (2005), and Weaver (2008), amongst others, several aspects of fluidelastic instability remain unresolved and not fully understood. This can be attributed to the fact that the problem is much more complex than originally anticipated.…”

mentioning

confidence: 99%

A single flexible tube in a rigid array as a model for fluidelastic instability in tube bundles

Khalifa

Weaver

Ziada

2012

Journal of Fluids and Structures

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mentioning

confidence: 99%

A single flexible tube in a rigid array as a model for fluidelastic instability in tube bundles

Khalifa

Weaver

Ziada

2012

Journal of Fluids and Structures

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“…Then, a proper knowledge of the dynamic behavior of this kind of systems is relevant and has motivated relevant researches over the last five decades, see e.g. [1][2][3][4]. Fundamental experimental studies have shown a strong influence of two-phase flow parameters, such as mixture velocity, void fraction, flow pattern and slip, on the structural vibration response [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Study on the Dynamic Behavior of Pipes Conveying Gas-Liquid Flow

2018

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Abstract. The dynamic behavior of clamped-clamped straight pipes conveying gas-liquid two-phase flow is theoretically investigated, specifically the effect of the flow parameters on the frequency of the system. First, the equation of motion is derived based on the classic Païdoussis formulation. Assuming EulerBernoulli beam theory, small-deflection approximation and no-slip homogeneous model, a coupled fluid-structure fourth-order partial differential equation (PDE) is obtained. Then, the equation of motion is rendered dimensionless and discretized through Galerkin's method. That method transforms the PDE into a set of Ordinary Differential Equations (ODEs). The system frequency is obtained by solving the system of ODEs by allowing the determinant to be equal to zero. System frequencies for different geometries, structural properties and flow conditions have been calculated. The results show that the system frequency decreases with increasing two-phase flow velocity. By contrast, the former increases with increasing homogeneous void fraction. These theoretical results are in agreement with experimental findings reported in the literature. Furthermore, even for typical two phase flow conditions, the system can become unstable for inadequate chooses of geometry or material of the pipe.

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“…Each spacer grid not only positions the fuel rods laterally, but also maintains a certain spacing between the individual rods (rod pitch). Coolant flow through the fuel assembly induces low-amplitude vibration of the fuel rods [2]. The vibration of interest here is that occurring at the locations where the fuel rods are supported, especially the relative vibration of the two surfaces in contact.…”

Section: Introductionmentioning

confidence: 99%