Forced Longitudinal Oscillations of a Gas in an Open Pipe Near the Resonance Excitation Frequency

Abstract

© 2017, Springer Science+Business Media, LLC, part of Springer Nature. Results of theoretical and experimental investigations of forced longitudinal oscillations of a homogeneous gas in an open pipe near the first natural frequency are presented. It has been established that at the resonance frequency the shape of the gas pressure wave changes with time by a law different from the harmonic one. The amplitude–frequency characteristics of the indicated oscillations have been derived. Satisfactory agreement of the theoretical calculation of the gas pressure oscillation range with experimental data has been obtained.