Pressure oscillation characteristics of combustor were tested and compared between double-plate liner and single liner

and the test results show that pressure oscillation amplitude of the former is minor under the same test conditions. Applicability of perforated resonators model based on superposition principle in analyzing pressure oscillation characteristics mentioned above was checked. After sensitivity analysis

liner structure improvements for decreasing pressure oscillation amplitude of combustor without changing cooling air allocation were investigated. Analysis results show that the hole number (or hole diameter) in linear wall is the key parameter in mitigating pressure oscillation in combustor in an engineering optimization way.