On the Modelling of Noise Generation in Corrugated Pipes

Goyder, Hugh

doi:10.1115/1.4001977

Cited by 10 publications

(6 citation statements)

References 7 publications

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“…These noise problems are encountered in applications such as domestic appliances, ventilation systems and heat exchangers (Petrie & Huntley 1980;Elliott 2005). For applications at elevated operating pressures such as offshore natural gas production systems, self-sustained oscillations also lead to dangerous structural vibrations (Belfroid, Shatto & Peters 2007;Goyder 2009). …”

Section: Introductionmentioning

confidence: 99%

On the whistling of corrugated pipes: effect of pipe length and flow profile

et al. 2011

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Whistling behaviour of two geometrically periodic systems, namely corrugated pipes and multiple side branch systems, is investigated both experimentally and numerically. Tests are performed on corrugated pipes with various lengths and cavity geometries. Experiments show that the peak-whistling Strouhal number, where the maximum amplitude in pressure fluctuations is registered, is independent of the pipe length. Experimentally, a decrease of the peak-whistling Strouhal number by a factor of two is observed with increasing confinement ratio, i.e. the ratio of pipe diameter to cavity width. A numerical methodology that combines incompressible flow simulations with vortex sound theory is proposed to estimate the acoustic source power in periodic systems. The methodology successfully predicts the Strouhal number ranges of acoustic energy production/absorption and the nonlinear saturation mechanism responsible for the stabilization of the limit cycle oscillation. The methodology predicts peak-whistling Strouhal numbers in agreement with experiments and explains the dependence of the peak-whistling Strouhal number on the confinement ratio. Combined with an energy balance, the proposed methodology is used to estimate the acoustic fluctuation amplitudes.

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Section: Introductionmentioning

confidence: 99%

On the whistling of corrugated pipes: effect of pipe length and flow profile

et al. 2011

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“…This matrix is to be combined with two boundary conditions to find v and p at both the upstream and downstream location. An elegant introduction to the usual notation with complex numbers is given by Goyder [27]. Frequency-domain analysis discloses natural modes and it directly leads to all steady-oscillatory solutions as a function of the forcing frequency.…”

Section: Frequency-domain Solutionmentioning

confidence: 99%

Acoustic Resonance in a Reservoir-Pipeline-Orifice System

Tijsseling

Hou

Svingen³

et al. 2010

ASME 2010 Pressure Vessels and Piping Conference: Volume 4

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The fundamentals of oscillating flow in a reservoir-pipe-orifice system are revisited in a theoretical study related to acoustic resonance experiments carried out in a large-scale pipeline. Four different types of system excitation are considered: forcing velocity, forcing pressure, linear oscillating resistance and nonlinear oscillating resistance. Analytical solutions are given for the periodic responses to the first three excitations. Analytical and numerical results for the large-scale pipeline are presented and some peculiarities are discussed.

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“…Theoretical work on the subject includes the work by Debut et al [13] who modelled the acoustic sources as a distribution of van der Pol oscillators along the pipe, and Goyder [14] who studied the distribution of sources and sinks along an acoustic wavelength in a corrugated pipe. More direct numerical studies have also appeared in recent years.…”

Section: Introductionmentioning

confidence: 99%

Aeroacoustic source analysis in a corrugated flow pipe using low-frequency mitigation

Amielh

Anselmet

Jiang

et al. 2014

Journal of Turbulence

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International audienceOur study is focused on a phenomenon often encountered in flow carrying pipes, since flow instabilities caused by geometric features may generate acoustic signals and thereafter interact with these signals in such a way that powerful pure tones are produced. A modern example is found in the so-called "singing risers", or the gas pipes connecting gas production platforms to the transport network. But the flow generated resonance in a fully corrugated circular pipe may be silenced by the addition of relatively low frequency flow oscillations induced by an acoustic generator. Experiments reported here, aimed at investigating in more detail the coupling between the flow in the pipe, the acoustically generated flow oscillations and the emitted resulting noise, are performed in a specifically designed facility. A rectangular transparent channel using glass walls enables us to use optical techniques to describe in detail the flow field in the corrugation vicinity, in addition to more standard hot-wire anemometry and acoustic pressure measurements with microphones, with and without the acoustically generated low-frequency oscillations

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On the Modelling of Noise Generation in Corrugated Pipes

Cited by 10 publications

References 7 publications

On the whistling of corrugated pipes: effect of pipe length and flow profile

On the whistling of corrugated pipes: effect of pipe length and flow profile

Acoustic Resonance in a Reservoir-Pipeline-Orifice System

Aeroacoustic source analysis in a corrugated flow pipe using low-frequency mitigation

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