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Experimental and Theoretical Investigation of the Emission and Diffraction of Discrete Tone Noise Generated from the Exhaust of a Ducted Fan
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| 자료유형 | 학위논문 |
|---|---|
| 서명/저자사항 | Experimental and Theoretical Investigation of the Emission and Diffraction of Discrete Tone Noise Generated from the Exhaust of a Ducted Fan. |
| 개인저자 | Truong, Alexander. |
| 단체저자명 | University of California, Irvine. Mechanical and Aerospace Engineering - Ph.D.. |
| 발행사항 | [S.l.]: University of California, Irvine., 2018. |
| 발행사항 | Ann Arbor: ProQuest Dissertations & Theses, 2018. |
| 형태사항 | 155 p. |
| 기본자료 저록 | Dissertation Abstracts International 80-01B(E). Dissertation Abstract International |
| ISBN | 9780438294820 |
| 학위논문주기 | Thesis (Ph.D.)--University of California, Irvine, 2018. |
| 일반주기 |
Source: Dissertation Abstracts International, Volume: 80-01(E), Section: B.
Adviser: Dimitri Papamoschou. |
| 요약 | In modern turbofan engines powering commercial aircraft, the fan is becoming the dominant source of noise at takeoff and landing. Understanding and modeling of the fan noise source, and the interaction of the emitted sound with the airframe, are |
| 요약 | The experimental effort entailed the design and construction of a subscale ducted fan rig that includes all the relevant components of the turbofan engine and simulates accurately the sound emission generated by the fan of such engines. The duct |
| 요약 | The theoretical effort comprises the following steps: (a) extraction of the harmonic content of the measured noise through use of the Vold-Kalman filter |
| 요약 | Far-field source parameterization shows that the wavepacket can be modeled as a short cylindrical disturbance surrounding the exit of the nozzle. The resulting modeled sound field captures the most prominent experimental far-field and near-field |
| 일반주제명 | Aerospace engineering. Acoustics. |
| 언어 | 영어 |
| 바로가기 | 
: 이 자료의 원문은 한국교육학술정보원에서 제공합니다. |
