Experimental Investigation on the Effects of DBD Plasma on the Film Cooling Effectiveness of a 30-Degree Slot
The effects of dielectric barrier discharge (DBD) plasma on the film cooling effectiveness of a 30-degree slot was experimentally investigated in a low-speed wind tunnel. The pressure sensitive paint (PSP) technique was used to measure the film cooling effectiveness, and two blowing ratios (0.5 and...
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| Format: | Article |
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MDPI AG
2017-06-01
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| Series: | Applied Sciences |
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| Online Access: | http://www.mdpi.com/2076-3417/7/6/633 |
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| author | Ye Jee Kim Gi Mun Kim Youhwan Shin Jae Su Kwak |
| author_facet | Ye Jee Kim Gi Mun Kim Youhwan Shin Jae Su Kwak |
| author_sort | Ye Jee Kim |
| collection | DOAJ |
| description | The effects of dielectric barrier discharge (DBD) plasma on the film cooling effectiveness of a 30-degree slot was experimentally investigated in a low-speed wind tunnel. The pressure sensitive paint (PSP) technique was used to measure the film cooling effectiveness, and two blowing ratios (0.5 and 1.0) were tested. A sinusoidal waveform with a 1-kHz frequency was supplied to the exposed electrode. Two input voltages (6 and 7 kV) and two exposed electrode locations were considered. The results showed that the film cooling effectiveness of the slot was higher for the blowing ratio of the 1.0 case than that for the blowing ratio of the 0.5 case regardless of plasma operation. The higher input voltage case (7 kV) showed higher film cooling effectiveness than the lower input voltage case (6 kV). The improvement in film cooling effectiveness facilitated by the DBD plasma was more significant when the coolant had less momentum. The maximum improvement of the area averaged film cooling effectiveness was 2.3% for the case with the exposed electrode located at the slot exit and a blowing ratio of 0.5. |
| first_indexed | 2024-12-11T17:59:06Z |
| format | Article |
| id | doaj.art-9b9e518aa2b94932b57460521922937e |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-11T17:59:06Z |
| publishDate | 2017-06-01 |
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| series | Applied Sciences |
| spelling | doaj.art-9b9e518aa2b94932b57460521922937e2022-12-22T00:55:58ZengMDPI AGApplied Sciences2076-34172017-06-017663310.3390/app7060633app7060633Experimental Investigation on the Effects of DBD Plasma on the Film Cooling Effectiveness of a 30-Degree SlotYe Jee Kim0Gi Mun Kim1Youhwan Shin2Jae Su Kwak3School of Aerospace and Mechanical Engineering, Korea Aerospace University, Goyang 10417, KoreaSchool of Aerospace and Mechanical Engineering, Korea Aerospace University, Goyang 10417, KoreaCenter for Urban Energy Research, Korea Institute of Science and Technology, Seoul 02792, KoreaSchool of Aerospace and Mechanical Engineering, Korea Aerospace University, Goyang 10417, KoreaThe effects of dielectric barrier discharge (DBD) plasma on the film cooling effectiveness of a 30-degree slot was experimentally investigated in a low-speed wind tunnel. The pressure sensitive paint (PSP) technique was used to measure the film cooling effectiveness, and two blowing ratios (0.5 and 1.0) were tested. A sinusoidal waveform with a 1-kHz frequency was supplied to the exposed electrode. Two input voltages (6 and 7 kV) and two exposed electrode locations were considered. The results showed that the film cooling effectiveness of the slot was higher for the blowing ratio of the 1.0 case than that for the blowing ratio of the 0.5 case regardless of plasma operation. The higher input voltage case (7 kV) showed higher film cooling effectiveness than the lower input voltage case (6 kV). The improvement in film cooling effectiveness facilitated by the DBD plasma was more significant when the coolant had less momentum. The maximum improvement of the area averaged film cooling effectiveness was 2.3% for the case with the exposed electrode located at the slot exit and a blowing ratio of 0.5.http://www.mdpi.com/2076-3417/7/6/633gas turbineslot film coolingfilm cooling effectivenesspressure sensitive paint (PSP)dielectric barrier discharge (DBD) plasma |
| spellingShingle | Ye Jee Kim Gi Mun Kim Youhwan Shin Jae Su Kwak Experimental Investigation on the Effects of DBD Plasma on the Film Cooling Effectiveness of a 30-Degree Slot Applied Sciences gas turbine slot film cooling film cooling effectiveness pressure sensitive paint (PSP) dielectric barrier discharge (DBD) plasma |
| title | Experimental Investigation on the Effects of DBD Plasma on the Film Cooling Effectiveness of a 30-Degree Slot |
| title_full | Experimental Investigation on the Effects of DBD Plasma on the Film Cooling Effectiveness of a 30-Degree Slot |
| title_fullStr | Experimental Investigation on the Effects of DBD Plasma on the Film Cooling Effectiveness of a 30-Degree Slot |
| title_full_unstemmed | Experimental Investigation on the Effects of DBD Plasma on the Film Cooling Effectiveness of a 30-Degree Slot |
| title_short | Experimental Investigation on the Effects of DBD Plasma on the Film Cooling Effectiveness of a 30-Degree Slot |
| title_sort | experimental investigation on the effects of dbd plasma on the film cooling effectiveness of a 30 degree slot |
| topic | gas turbine slot film cooling film cooling effectiveness pressure sensitive paint (PSP) dielectric barrier discharge (DBD) plasma |
| url | http://www.mdpi.com/2076-3417/7/6/633 |
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