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Published 1987 | Published
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Third-order nonlinear acoustic waves and triggering of pressure oscillations in combustion chambers. Part I: Longitudinal modes

Abstract

An analytical analysis has been developed to investigate the behavior of unsteady motions in combustion chambers. The model accommodates the third-order nonlinear acoustics and a second-order combustion response. Ths influences of various linear and nonlinear parameters on the limit cycles and triggering of pressure osoillations are disoussed in detail. Results indicate that the third-order acoustics has little influence on the triggering of instability. It only affects the limiting amplitudes and the stability domains of limit cycles. The nonlinear combustion response plays an essential role in determining the characteristics of triggering.

Additional Information

© 1987, American Institute of Aeronautics and Astronautics. This work was supported partly by the Office of Naval Research, Grant No. 00014-84-K-0434, and partly by The Pennsylvania State University. The authors are greatly indebted to Dr. H. S. Sun for his assistance in formulating the model of the third-order nonlinear acoustic model.

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August 19, 2023
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January 13, 2024