Abstract
Thermodynamic mechanism of thermoacoustic self-excited oscillation is analyzed in this paper. The law of minimizing entropy flow is obtained basing on the fundamentals of finite-time thermodynamics. The results obtained here show that the thermoacoustic self-excited oscillation, which is a non-isentropic oscillation with power output corresponding to a limit cycle in the phase space takes place when hot temperature T h exceeds a threshold value T h *. The effect of nonlinear terms on the system will lead to the second harmonic wave.
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Li, Q., Wu, F., Guo, F. et al. Thermodynamic Analysis on Thermoacoustic Self-Excited Oscillation. Open Systems & Information Dynamics 10, 391–402 (2003). https://doi.org/10.1023/B:OPSY.0000009558.63129.24
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DOI: https://doi.org/10.1023/B:OPSY.0000009558.63129.24