Abstract
Based on the three-dimensional numerical simulation and rig test, the effect of swirl cup's design parameters of head of flame tube, such as the relative flow rate and the swirl number of secondary swirler, on combustion performance of an aero-engine main combustor was researched. The researched performance includes the outlet temperature field distribution and nitrogen oxides (NOx) emissions. It is shown that the result of numerical simulation and rig test is consistent: with the increase of the secondary swirler's relative flow rate, the outlet temperature field of the main combustor deteriorates, and the nitrogen oxides emission slightly reduces; with the deviation of swirl number of the secondary swirler from the benchmark design value, the outlet temperature field deteriorates, while nitrogen oxides emission increases with the increase of swirl number.
| Original language | English |
|---|---|
| Pages (from-to) | 2355-2361 |
| Number of pages | 7 |
| Journal | Hangkong Dongli Xuebao/Journal of Aerospace Power |
| Volume | 29 |
| Issue number | 10 |
| DOIs | |
| State | Published - 1 Oct 2014 |
Keywords
- CFD analysis and rig test verification
- Main combustor performance
- Relative flow rate
- Swirl cup
- Swirl number
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