Volume 37 Issue 2
Feb.  2022
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Article Navigation >  Journal of Aerospace Power  > 2022  >  37(2): 356-365
GAO Xianzhi, WANG Xionghui, FENG Xiaoxing, E Yajia, HE Pei. Research and verification of thermo-acoustic simulation method based on single-sector combustion test[J]. Journal of Aerospace Power, 2022, 37(2): 356-365. doi: 10.13224/j.cnki.jasp.20210117
Citation: GAO Xianzhi, WANG Xionghui, FENG Xiaoxing, E Yajia, HE Pei. Research and verification of thermo-acoustic simulation method based on single-sector combustion test[J]. Journal of Aerospace Power, 2022, 37(2): 356-365. doi: 10.13224/j.cnki.jasp.20210117
shu

Research and verification of thermo-acoustic simulation method based on single-sector combustion test

doi: 10.13224/j.cnki.jasp.20210117

  • Commercial Aircraft Engine Company Limited，Aero Engine Corporations of China，Shanghai 200241，China

  • Received Date: 2021-03-16
  • Publish Date: 2022-02-28
    Abstract
  • An in-house developed thermo-acoustic network model was used to study the effects of different test conditions，outlet boundary conditions，and the length of inlet measurement section on the combustion instabilities of single sector combustion test rig，and the results were compared between simulations and tests.The results showed that the thermo-acoustic network model accurately predicted the unstable frequency at different test conditions.The differences between the predicted and test results were within ±10 Hz，and the errors were within 2%.The previous single-sector combustion chamber test showed that combustion oscillation occurred when the inlet measurement section was 0.4 m.Combustion oscillation did not happen when the inlet measurement section was 0.25 m. Numerical simulations showed that the self-excited combustion oscillation can be excited only when the length of the inlet measurement section was between 0.35 m and 0.44 m，which explained the above test results well.

     

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