Patent ID: 11859816
Assignee: INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS)
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 9:
10. A system (100) for suppressing thermo-acoustic instabilities in a combustor, the system comprising:
a measuring device (102) configured to generate at least one first signal corresponding to fluctuations in turbulent velocity of the combustor at every location on the plane of the combustor (C) where the flame is stabilized and at least one second signal corresponding to fluctuations in acoustic pressure of the combustor at least one location of the combustor;
a phase locked value generator (112A) configured to determine a plurality of phase locked values across the combustor indicative of synchronization of the at least one first signal corresponding to turbulent velocity of the combustor and the at least one second signal corresponding to acoustic pressure of the combustor;
a determinism unit (112B) configured to measure parameters indicative of a plurality of recurring fluctuations in turbulent velocity of the combustor at every location of the combustor;
a Hurst scaler (112C) configured to determine a plurality of Hurst exponent values at every location of the combustor based on the at least one first signal; and
a critical region detector (112) configured to detect at least one critical region of the combustor, wherein the at least one critical region corresponds to at least one of a maximum value of the plurality of phase locked values, a maximum value of the plurality of recurring fluctuations in turbulent velocity of the combustor at every location of the combustor, and a minimum value of the plurality of Hurst exponent values;
wherein micro-jets of air are injected at the detected critical regions to suppress thermo-acoustic instabilities.