Under the non-design condition

there is obvious flow distortion in the compressor flow. The obvious non-uniform air field from the outlet of the compressor has an important influence on the performance of the combustion chamber. The differences of combustor performance under the uniform and non-uniform inlet flow conditions with a detailed chemical reaction kinetics and a diffusion flamelet model were studied. Calculated results were in good agreement with the experimental data. Results showed that the non-uniform inlet flow destroyed the symmetry of the flow field and resulted in an obvious reduction in combustion efficiency. The combustion efficiency was improved by increasing the area of primary combustion holes.