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| Content Provider | Springer Nature Link |
|---|---|
| Author | Wang, Xiaofeng Lin, Yuzhen Zhang, Chi Tian, Xingpeng |
| Copyright Year | 2015 |
| Abstract | In a gas turbine engine combustor, highly swirling combustion is usually adopted to stabilize flame and reduce pollutant emissions. Swirl cup, as an air blast atomizer, is widely used to provide a uniform presentation of fuel droplets to the combustor dome. This paper investigated the effect of secondary swirler on the flow field downstream of the swirl cup using particle image velocimetry (PIV). Three swirl cups’ non-reacting flow field were studied: case A, B and C with secondary swirler vane angle 53°, 60° and 68° respectively. Detailed mean and transient velocities and vorticity in the center plane were obtained. From the PIV results, a sharp contrast flow field was obtained for case A to other two cases due to the lower secondary swirling intensity. The recirculation zone is collapsed in disorder for the case A. Ignition tests of the three cups were completed in a single cup combustor. In general, the ignition performance increases with the increasing of the secondary swirling intensity. For case A, the ignition performance is very unstable and has much randomness and there is no clear lean ignition boundary can be generated. This work can further understand the swirl behavior and ignition mechanism. |
| Starting Page | 488 |
| Ending Page | 495 |
| Page Count | 8 |
| File Format | |
| ISSN | 10032169 |
| Journal | Journal of Thermal Science |
| Volume Number | 24 |
| Issue Number | 5 |
| e-ISSN | 1993033X |
| Language | English |
| Publisher | Science Press |
| Publisher Date | 2015-09-13 |
| Publisher Place | Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Swirl cup swirl number ignition PIV Classical Continuum Physics Engineering Fluid Dynamics Engineering Thermodynamics, Heat and Mass Transfer |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics |
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