Effects of Dielectric Barrier Discharge Plasma on the Combustion Performances of Reverse-Flow Combustor in an Aero-Engine
- 4 Downloads
In order to apply plasma assisted combustion (PAC) into a reverse-flow aero-engine and verify the improvement of combustion performance, a feasible approach was proposed in this work. In this approach, based on the structure characteristics of the reverse-flow combustor, a parallel plate double dielectric barrier discharge (DBD) PAC actuator was designed to generate plasma. It was installed at the front of combustor. When the actuator is driven, the original air flow is not disturbed for the device’s structure and installation. Using aviation kerosene as fuel, the effects of plasma on ignition boundary and outlet temperature of the combustor were experimentally investigated at atmosphere pressures. Through the dual high voltage differential power supply, the large gap, large area and uniform plasma discharge was achieved. The results of PAC actuator discharge indicate that inlet air temperature has a small increase of 4∼9 K. After PAC is applied, the combustion performances of reverse-flow combustor in an aero-engine are remarkably improved. Experimental results indicate that ignition boundary is widened by 3.7%∼12.5% because of the impact of plasma. Outlet highest temperature of combustor is raised by 19∼75 K; outlet temperature distribution coefficient is reduced by 11.1%∼26.6%. This research provides an effective and practicable way to implement the application of PAC in aero-engine combustor and has some engineering application significance.
Keywordsaero-engine reverse-flow combustor double dielectric barrier discharge plasma assisted combustion
Unable to display preview. Download preview PDF.
This research was supported by the National Natural Science Foundation of China (Funding Nos. 51436008, 91741112 and 51806245).
- Matveev I., Multi-mode plasma igniters and pilots for aerospace and industrial applications. Applied Plasma Technologies, Falls Church, VA, 2006.Google Scholar
- Ombrello T., Plasma assisted combustion: systematic decoupling of the kinetic enhancement mechanisms of ignition, flame propagation, and flame stabilization by long lifetime species. Ph.D. dissertation, Princeton University, New Jersey, Princeton, USA, 2009.Google Scholar
- He L.M., Principles of aircraft propulsion system. National Defense Industry Press, Beijing, 2006.Google Scholar