Onset of flow induced tonal noise in corrugated pipe segments

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    Uittreksel

    Corrugated pipes combine small-scale rigidity and large-scale flexibility, which make them very useful in industrial applications. The flow through such a pipe can induce strong undesirable tonal noise (whistling) and even drive integrity threatening structural vibrations. Placing a corrugated segment along a smooth pipe reduces the whistling, while this composite pipe still retains some global flexibility. The whistling is reduced by thermoviscous damping in the smooth pipe segment. For a given corrugated segment and flow velocity, one would like to predict the smooth pipe length just sufficient to avoid tonal noise: the onset of whistling. A linear model based on empirical data is proposed that predicts the conditions at the onset of whistling for a composite pipe at moderately high Reynolds numbers, Re: 3000 < Re < 100,000. Experimental results for corrugated pipes of eight different corrugation geometries are presented revealing fair agreement with the theory. Based on these results, a universal qualitative prediction tool is obtained valid for corrugated pipe segments long compared to the acoustic wave-length.

    TaalEngels
    Artikelnummer051303
    Aantal pagina's9
    TijdschriftJournal of Pressure Vessel Technology, Transactions of the ASME
    Volume136
    Nummer van het tijdschrift5
    DOI's
    StatusGepubliceerd - 1 jan 2014

    Vingerafdruk

    Pipe
    Composite materials
    Structural integrity
    Flow velocity
    Rigidity
    Industrial applications
    Reynolds number
    Damping
    Acoustic waves
    Wavelength
    Geometry

    Citeer dit

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    title = "Onset of flow induced tonal noise in corrugated pipe segments",
    abstract = "Corrugated pipes combine small-scale rigidity and large-scale flexibility, which make them very useful in industrial applications. The flow through such a pipe can induce strong undesirable tonal noise (whistling) and even drive integrity threatening structural vibrations. Placing a corrugated segment along a smooth pipe reduces the whistling, while this composite pipe still retains some global flexibility. The whistling is reduced by thermoviscous damping in the smooth pipe segment. For a given corrugated segment and flow velocity, one would like to predict the smooth pipe length just sufficient to avoid tonal noise: the onset of whistling. A linear model based on empirical data is proposed that predicts the conditions at the onset of whistling for a composite pipe at moderately high Reynolds numbers, Re: 3000 < Re < 100,000. Experimental results for corrugated pipes of eight different corrugation geometries are presented revealing fair agreement with the theory. Based on these results, a universal qualitative prediction tool is obtained valid for corrugated pipe segments long compared to the acoustic wave-length.",
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    Onset of flow induced tonal noise in corrugated pipe segments. / Rudenko, Oleksii; Nakiboǧlu, Güneş; Hirschberg, Avraham.

    In: Journal of Pressure Vessel Technology, Transactions of the ASME, Vol. 136, Nr. 5, 051303, 01.01.2014.

    Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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