| Budget Amount *help |
¥24,700,000 (Direct Cost: ¥19,000,000、Indirect Cost: ¥5,700,000)
Fiscal Year 2018: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2017: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2016: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
|
|---|
| Outline of Final Research Achievements |
For the purpose of maximizing the performance of DBD plasma actuator which is a flow control device utilizing Dielectric-Barrier-Discharge, we parametrically optimize the applied voltage waveform. The result shows that the waveform composed of steep and gradual voltage slope can provide the best performance, and it is clarified that the performance improvement mechanism is dense plasma production in the steep-voltage slope period and maintaining electric field strength for plasma acceleration in the gradual-voltage slope period. Furthermore, we propose the new concept of tri-electrode plasma actuator which combine use of AC and DC discharge. The numerical simulation shows that higher performance can be obtained in it because the DC discharge, which has high-efficient electrohydrodynamic force production, is enhanced by electron supply from the AC discharge.
|
