A Small Strouhal Number Analysis for Acoustic Wave-jet Flow-pipe Interaction
نویسنده
چکیده
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 [ l ] 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.
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