A small Strouhal number analysis for acoustic wave-jet flow-pipe interaction

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    Abstract

    Asymptotic expansions for small Strouhal number, valid for arbitrary subsonic Mach number, are derived for the solution of a simple problem of the interaction between an acoustic wave, a jet flow and a pipe, based on Munt's [1] exact formal solution. These expansions relate to the pressure and velocity fluctuations in the jet flow and in the far field, and to the reflection coefficient, end-impedance and end-correction for the reflected wave in the pipe. The field inside the flow is compared with experiments. The influence of a Kutta condition at the lip of the pipe is shown to be highly significant.
    Original languageEnglish
    Pages (from-to)539-556
    Number of pages18
    JournalJournal of Sound and Vibration
    Volume86
    Issue number4
    DOIs
    Publication statusPublished - 1983

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