The Effect of Yaw Angle on a Compressible Rectangular Cavity Flow
Experiments are performed to determine the characteristics of a compressible flow over yawed rectangular cavities for Mach numbers of 0.64, 0.70, and 0.83. The cavity’s length-to-depth ratio varies from 4.43 to 21.50 and the length-to-width ratio is unity. The yaw angle is 0°–45°. The upstream compr...
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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/10.1155/2017/8136947 |
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| author | Kuan-Huang Lee Kung-Ming Chung Keh-Chin Chang |
| author_facet | Kuan-Huang Lee Kung-Ming Chung Keh-Chin Chang |
| author_sort | Kuan-Huang Lee |
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| description | Experiments are performed to determine the characteristics of a compressible flow over yawed rectangular cavities for Mach numbers of 0.64, 0.70, and 0.83. The cavity’s length-to-depth ratio varies from 4.43 to 21.50 and the length-to-width ratio is unity. The yaw angle is 0°–45°. The upstream compression and downstream expansion near the front and rear corners of a cavity decrease when the value of the yaw angle increases. The amplitude of the fluctuating pressure is a maximum for an open cavity with a yaw angle of 15°. An increase in the yaw angle results in a reduction in the pressure fluctuations for both open and transitional cavities. In the span-wise direction, variations in the mean and fluctuating pressure are less significant than those in the chord-wise direction. The oscillating frequency of resonance varies slightly with the yaw angle, but the amplitudes for the power spectral density are significantly reduced when the yaw angle is larger than 30°. For lower Mach numbers, the lower mode plays an important role in self-sustained oscillations for an open cavity when there is an increase in the yaw angle. |
| format | Article |
| id | doaj-art-ecc36429bb0848f598f9da09a6c2f4ec |
| 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-ecc36429bb0848f598f9da09a6c2f4ec2025-02-03T01:26:14ZengWileyInternational Journal of Aerospace Engineering1687-59661687-59742017-01-01201710.1155/2017/81369478136947The Effect of Yaw Angle on a Compressible Rectangular Cavity FlowKuan-Huang Lee0Kung-Ming Chung1Keh-Chin Chang2Institute of Aeronautics and Astronautics, National Cheng Kung University, Tainan, TaiwanAerospace Science and Technology Research Centre, National Cheng Kung University, Tainan, TaiwanInstitute of Aeronautics and Astronautics, National Cheng Kung University, Tainan, TaiwanExperiments are performed to determine the characteristics of a compressible flow over yawed rectangular cavities for Mach numbers of 0.64, 0.70, and 0.83. The cavity’s length-to-depth ratio varies from 4.43 to 21.50 and the length-to-width ratio is unity. The yaw angle is 0°–45°. The upstream compression and downstream expansion near the front and rear corners of a cavity decrease when the value of the yaw angle increases. The amplitude of the fluctuating pressure is a maximum for an open cavity with a yaw angle of 15°. An increase in the yaw angle results in a reduction in the pressure fluctuations for both open and transitional cavities. In the span-wise direction, variations in the mean and fluctuating pressure are less significant than those in the chord-wise direction. The oscillating frequency of resonance varies slightly with the yaw angle, but the amplitudes for the power spectral density are significantly reduced when the yaw angle is larger than 30°. For lower Mach numbers, the lower mode plays an important role in self-sustained oscillations for an open cavity when there is an increase in the yaw angle.http://dx.doi.org/10.1155/2017/8136947 |
| spellingShingle | Kuan-Huang Lee Kung-Ming Chung Keh-Chin Chang The Effect of Yaw Angle on a Compressible Rectangular Cavity Flow International Journal of Aerospace Engineering |
| title | The Effect of Yaw Angle on a Compressible Rectangular Cavity Flow |
| title_full | The Effect of Yaw Angle on a Compressible Rectangular Cavity Flow |
| title_fullStr | The Effect of Yaw Angle on a Compressible Rectangular Cavity Flow |
| title_full_unstemmed | The Effect of Yaw Angle on a Compressible Rectangular Cavity Flow |
| title_short | The Effect of Yaw Angle on a Compressible Rectangular Cavity Flow |
| title_sort | effect of yaw angle on a compressible rectangular cavity flow |
| url | http://dx.doi.org/10.1155/2017/8136947 |
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