Amplitude spectra of the combustor pressure with the uncontrolled combustion instability. The combustion instability shows a peak in the spectra at about 530 Hz. The peak is at about 0.42 psi. The surrounding noise at other frequencies is at about 0.15 psi. The figure also shows the combustion instability amplitude spectra when being controlled by the adaptive phase-shift control method described in the article. The peak using this control method was reduced to about 0.22 psi.
Last updated: September 3, 2004 11:01 AM
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