Low-frequency acoustic signals propagation in buried pipelines

A. L. Ovchinnikov, Boris Mikhaylovich Lapshin

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    The article deals with the issues concerning acoustic signals propagation in the large-diameter oil pipelines caused by mechanical action on the pipe body. Various mechanisms of signals attenuation are discussed. It is shown that the calculation of the attenuation caused only by internal energy loss, i.e, the presence of viscosity, thermal conductivity and liquid pipeline wall friction lead to low results. The results of experimental studies, carried out using the existing pipeline with a diameter of 1200 mm. are shown. It is experimentally proved that the main mechanism of signal attenuation is the energy emission into the environment. The numerical values of attenuation coefficients that are 0,14- 0.18 dB/m for the pipeline of 1200 mm in diameter, in the frequency range from 50 Hz to 500 Hz, are determined.

    Original languageEnglish
    Article number012031
    JournalJournal of Physics: Conference Series
    Volume671
    Issue number1
    DOIs
    Publication statusPublished - 18 Jan 2016

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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