Flow Separation Control of Nacelle Inlets in Crosswinds by Dielectric Barrier Discharge Plasma Actuation
Crosswinds will lead to large-scale flow separation in the nacelle inlets, which seriously affects the flight safety of the aircraft; there is an urgent need to develop flow control measures. As a plasma flow control method, the application of surface dielectric barrier discharge in the field of nac...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Actuators |
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| Online Access: | https://www.mdpi.com/2076-0825/12/6/229 |
| _version_ | 1797596651561418752 |
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| author | Dongsheng Zhang Hua Liang Hesen Yang Zhi Su Chuanbiao Zhang Shimin Liu |
| author_facet | Dongsheng Zhang Hua Liang Hesen Yang Zhi Su Chuanbiao Zhang Shimin Liu |
| author_sort | Dongsheng Zhang |
| collection | DOAJ |
| description | Crosswinds will lead to large-scale flow separation in the nacelle inlets, which seriously affects the flight safety of the aircraft; there is an urgent need to develop flow control measures. As a plasma flow control method, the application of surface dielectric barrier discharge in the field of nacelle inlet separation control is of great significance for improving the intake quality. Based on the characteristic law of the baseline flow field, the flow control effect of the nacelle inlet separation flow field experiments with NS-DBD, and the influence of the actuation frequency on the flow control is discussed. A comparative experimental study of NS-DBD and AC-DBD is carried out. Finally, the flow control mechanisms for both are discussed. The results show that under the condition that the flow velocity of the wind tunnel is 35 m/s and the crosswind angle is 10°, the average total pressure loss coefficient and distortion index decrease by 29.62% and 44.14% by NS-DBD actuation. At the same time, exists an inherent optimal coupling frequency in NS-DBD, and the control effect of NS-DBD is better than that of AC-DBD. NS-DBD mainly through shock waves and induced vortices, while AC-DBD mainly through the induced generation of near-wall jets to reduce the inverse pressure gradient and improve nacelle flow separation. |
| first_indexed | 2024-03-11T02:54:09Z |
| format | Article |
| id | doaj.art-c69397c8592c4306b67d8bd43ab55f34 |
| institution | Directory Open Access Journal |
| issn | 2076-0825 |
| language | English |
| last_indexed | 2024-03-11T02:54:09Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Actuators |
| spelling | doaj.art-c69397c8592c4306b67d8bd43ab55f342023-11-18T08:48:36ZengMDPI AGActuators2076-08252023-05-0112622910.3390/act12060229Flow Separation Control of Nacelle Inlets in Crosswinds by Dielectric Barrier Discharge Plasma ActuationDongsheng Zhang0Hua Liang1Hesen Yang2Zhi Su3Chuanbiao Zhang4Shimin Liu5National Key Lab of Aerospace Power System and Plasma Technology, Air Force Engineering University, Xi’an 710038, ChinaNational Key Lab of Aerospace Power System and Plasma Technology, Air Force Engineering University, Xi’an 710038, ChinaNational Key Lab of Aerospace Power System and Plasma Technology, Air Force Engineering University, Xi’an 710038, ChinaNational Key Lab of Aerospace Power System and Plasma Technology, Air Force Engineering University, Xi’an 710038, ChinaNational Key Lab of Aerospace Power System and Plasma Technology, Air Force Engineering University, Xi’an 710038, ChinaNational Key Lab of Aerospace Power System and Plasma Technology, Air Force Engineering University, Xi’an 710038, ChinaCrosswinds will lead to large-scale flow separation in the nacelle inlets, which seriously affects the flight safety of the aircraft; there is an urgent need to develop flow control measures. As a plasma flow control method, the application of surface dielectric barrier discharge in the field of nacelle inlet separation control is of great significance for improving the intake quality. Based on the characteristic law of the baseline flow field, the flow control effect of the nacelle inlet separation flow field experiments with NS-DBD, and the influence of the actuation frequency on the flow control is discussed. A comparative experimental study of NS-DBD and AC-DBD is carried out. Finally, the flow control mechanisms for both are discussed. The results show that under the condition that the flow velocity of the wind tunnel is 35 m/s and the crosswind angle is 10°, the average total pressure loss coefficient and distortion index decrease by 29.62% and 44.14% by NS-DBD actuation. At the same time, exists an inherent optimal coupling frequency in NS-DBD, and the control effect of NS-DBD is better than that of AC-DBD. NS-DBD mainly through shock waves and induced vortices, while AC-DBD mainly through the induced generation of near-wall jets to reduce the inverse pressure gradient and improve nacelle flow separation.https://www.mdpi.com/2076-0825/12/6/229nacelle inletscrosswindflow separation controlNS-DBDAC-DBD |
| spellingShingle | Dongsheng Zhang Hua Liang Hesen Yang Zhi Su Chuanbiao Zhang Shimin Liu Flow Separation Control of Nacelle Inlets in Crosswinds by Dielectric Barrier Discharge Plasma Actuation Actuators nacelle inlets crosswind flow separation control NS-DBD AC-DBD |
| title | Flow Separation Control of Nacelle Inlets in Crosswinds by Dielectric Barrier Discharge Plasma Actuation |
| title_full | Flow Separation Control of Nacelle Inlets in Crosswinds by Dielectric Barrier Discharge Plasma Actuation |
| title_fullStr | Flow Separation Control of Nacelle Inlets in Crosswinds by Dielectric Barrier Discharge Plasma Actuation |
| title_full_unstemmed | Flow Separation Control of Nacelle Inlets in Crosswinds by Dielectric Barrier Discharge Plasma Actuation |
| title_short | Flow Separation Control of Nacelle Inlets in Crosswinds by Dielectric Barrier Discharge Plasma Actuation |
| title_sort | flow separation control of nacelle inlets in crosswinds by dielectric barrier discharge plasma actuation |
| topic | nacelle inlets crosswind flow separation control NS-DBD AC-DBD |
| url | https://www.mdpi.com/2076-0825/12/6/229 |
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