Effects of Active and Passive Control Techniques on Mach 1.5 Cavity Flow Dynamics
Supersonic flow over cavities has been of interest since 1960s because cavities represent the bomb bays of aircraft. The flow is transient, turbulent, and complicated. Pressure fluctuations inside the cavity can impede successful weapon release. The objective of this study is to use active and passi...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/8253264 |
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| author | Selin Aradag Kubra Asena Gelisli Elcin Ceren Yaldir |
| author_facet | Selin Aradag Kubra Asena Gelisli Elcin Ceren Yaldir |
| author_sort | Selin Aradag |
| collection | DOAJ |
| description | Supersonic flow over cavities has been of interest since 1960s because cavities represent the bomb bays of aircraft. The flow is transient, turbulent, and complicated. Pressure fluctuations inside the cavity can impede successful weapon release. The objective of this study is to use active and passive control methods on supersonic cavity flow numerically to decrease or eliminate pressure oscillations. Jet blowing at several locations on the front and aft walls of the cavity configuration is used as an active control method. Several techniques are used for passive control including using a cover plate to separate the flow dynamics inside and outside of the cavity, trailing edge wall modifications, such as inclination of the trailing edge, and providing curvature to the trailing edge wall. The results of active and passive control techniques are compared with the baseline case in terms of pressure fluctuations, sound pressure levels at the leading edge, trailing edge walls, and cavity floor and in terms of formation of the flow structures and the results are presented. It is observed from the results that modification of the trailing edge wall is the most effective of the control methods tested leading to up to 40 dB reductions in cavity tones. |
| format | Article |
| id | doaj-art-05642afe128348a88154b2c108dff1f3 |
| institution | Kabale University |
| issn | 1687-5966 1687-5974 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-05642afe128348a88154b2c108dff1f32025-02-03T05:52:09ZengWileyInternational Journal of Aerospace Engineering1687-59661687-59742017-01-01201710.1155/2017/82532648253264Effects of Active and Passive Control Techniques on Mach 1.5 Cavity Flow DynamicsSelin Aradag0Kubra Asena Gelisli1Elcin Ceren Yaldir2Department of Mechanical Engineering, TOBB University of Economics and Technology, Sogutozu Cad. No. 43, 06560 Ankara, TurkeyDepartment of Mechanical Engineering, TOBB University of Economics and Technology, Sogutozu Cad. No. 43, 06560 Ankara, TurkeyDepartment of Mechanical Engineering, TOBB University of Economics and Technology, Sogutozu Cad. No. 43, 06560 Ankara, TurkeySupersonic flow over cavities has been of interest since 1960s because cavities represent the bomb bays of aircraft. The flow is transient, turbulent, and complicated. Pressure fluctuations inside the cavity can impede successful weapon release. The objective of this study is to use active and passive control methods on supersonic cavity flow numerically to decrease or eliminate pressure oscillations. Jet blowing at several locations on the front and aft walls of the cavity configuration is used as an active control method. Several techniques are used for passive control including using a cover plate to separate the flow dynamics inside and outside of the cavity, trailing edge wall modifications, such as inclination of the trailing edge, and providing curvature to the trailing edge wall. The results of active and passive control techniques are compared with the baseline case in terms of pressure fluctuations, sound pressure levels at the leading edge, trailing edge walls, and cavity floor and in terms of formation of the flow structures and the results are presented. It is observed from the results that modification of the trailing edge wall is the most effective of the control methods tested leading to up to 40 dB reductions in cavity tones.http://dx.doi.org/10.1155/2017/8253264 |
| spellingShingle | Selin Aradag Kubra Asena Gelisli Elcin Ceren Yaldir Effects of Active and Passive Control Techniques on Mach 1.5 Cavity Flow Dynamics International Journal of Aerospace Engineering |
| title | Effects of Active and Passive Control Techniques on Mach 1.5 Cavity Flow Dynamics |
| title_full | Effects of Active and Passive Control Techniques on Mach 1.5 Cavity Flow Dynamics |
| title_fullStr | Effects of Active and Passive Control Techniques on Mach 1.5 Cavity Flow Dynamics |
| title_full_unstemmed | Effects of Active and Passive Control Techniques on Mach 1.5 Cavity Flow Dynamics |
| title_short | Effects of Active and Passive Control Techniques on Mach 1.5 Cavity Flow Dynamics |
| title_sort | effects of active and passive control techniques on mach 1 5 cavity flow dynamics |
| url | http://dx.doi.org/10.1155/2017/8253264 |
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