Nonlinear saturation of the thermoacoustic instability


Karpov, S. and Prosperetti, A. (2000) Nonlinear saturation of the thermoacoustic instability. Journal of the Acoustical Society of America, 107 . pp. 3130-3147. ISSN 0001-4966

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Abstract:A weakly nonlinear theory of the thermoacoustic instability in gas-filled tubes is developed in the time domain by exploiting the difference between the instability time scale and the period of standing waves. By carrying the expansion to fourth order in the perturbation parameter, explicit results for the initial growth, nonlinear evolution, and final saturation are obtained. The dependence of the saturation amplitude upon the temperature difference in the stack, the tube geometry, stack plate spacing, Prandtl number, and other parameters is illustrated.
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Copyright:©2000 Acoustical Society of America
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Metis ID: 129620