| contributor author | A. S. Lyrintzis | |
| contributor author | Y. Xue | |
| date accessioned | 2017-05-08T23:38:49Z | |
| date available | 2017-05-08T23:38:49Z | |
| date copyright | June, 1992 | |
| date issued | 1992 | |
| identifier issn | 0098-2202 | |
| identifier other | JFEGA4-27067#240_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/110453 | |
| description abstract | Investigation of noise mechanisms due to unsteady transonic flow is important for aircraft noise reduction. In this work, the near-field impulsive noise due to an oscillating flap is simulated numerically. The problem is modeled by the two-dimensional high frequency transonic small disturbance equation (VTRAN2 code). The three types of unsteady shock wave motion have been identified. Two different important disturbances exist in the pressure signal. The disturbances are related to the unsteady motion of the supersonic pocket and fluctuating lift, and drag forces. Pressure wave signatures, noise frequency spectra, and noise directivity are shown. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Acoustics of Transonic Flow Around an Oscillating Flap | |
| type | Journal Paper | |
| journal volume | 114 | |
| journal issue | 2 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.2910021 | |
| journal fristpage | 240 | |
| journal lastpage | 245 | |
| identifier eissn | 1528-901X | |
| keywords | Acoustics | |
| keywords | Transonic flow | |
| keywords | Noise (Sound) | |
| keywords | Pressure | |
| keywords | Motion | |
| keywords | Force | |
| keywords | Spectra (Spectroscopy) | |
| keywords | Noise control | |
| keywords | Drag (Fluid dynamics) | |
| keywords | Shock waves | |
| keywords | Waves | |
| keywords | Aircraft | |
| keywords | Equations | |
| keywords | Signals AND Mechanisms | |
| tree | Journal of Fluids Engineering:;1992:;volume( 114 ):;issue: 002 | |
| contenttype | Fulltext | |