Abstract
Control technology of low-frequency combustion instabilities was investigated with experiments. Combustion instability active control experimental system and control equipments were designed. Open loop active control for pulsed liquid fuel injection was studied. Results show that periodic heat release due to fuel pulse injection is responsible for suppressing pressure oscillations. While the periodic heat release is in reverse phase with pressure oscillation, amplitude is reduced obviously. It's concluded that injection phase angle is the leading factor of control effect. Suitable range of control parameters was obtained by means of parameter modulation. Adaptive closed-loop control strategy with feedback was established. The experiment results indicate that closed-loop active control is an effectual method for suppressing pressure oscillations in dump combustors.
| Original language | English |
|---|---|
| Pages (from-to) | 496-501 |
| Number of pages | 6 |
| Journal | Guti Huojian Jishu/Journal of Solid Rocket Technology |
| Volume | 33 |
| Issue number | 5 |
| State | Published - Oct 2010 |
Keywords
- Combustion control
- Dump combustor
- Experiment
- Low-frequency combustion instabilities