Design and experimental evaluation of a plasma swirler with helical shaped actuators

摘要: Abstract In order to enhance the flow control effectiveness of plasma swirl injector, dielectric barrier discharge (DBD) actuators with helical electrodes are developed and performance is compared that straight through field measurement. This new design can adjust distribution increase intensity. More importantly, be used axial velocity besides azimuthal velocity, therefore it mitigate flame blow-off or flashback. addition, plasma-induced aligned direction moving out vane swirler accurately, which reduce pressure loss from swirler. The shaped actuator more suitable for working in conjunction traditional mechanical swirlers, providing flexibility control. By changing their relative positions, four different configurations considered, making flexible combinations possible options combustion Results measurement showed a central recirculation zone (CRZ) appeared under actuation. Compared electrode actuation, size CRZ increased back enhanced by Effect on dissipation also observed.