(A) study on the sound pressure distribution in a duct with flow = 도관내에 공기의 흐름이 있을 경우, 관벽의 음원에 의한 음압 분포에 대한 연구

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Reflection coefficient at an end of an unflanged duct without flow is derived analytically and compared with the previous one. With this reflection coefficient the case in which there is a mean flow is investigated and the reflection coefficient for such case is also found theoretically. Using this coefficient the sound pressure distribution in the duct is obtained with a flow velocity ranging from Mach Number 0 to 0.1. An experiment is executed with both ends of the duct open without flow. The result is compared with the analytical solution, which shows very good agreement with each other. In addition analytical relations have been formulated between the sound pressure deviation and the flow velocity at specific frequency.
Advisors
Lee, Byung-Ho이병호
Description
한국과학기술원 : 기계공학과,
Publisher
한국과학기술원
Issue Date
1988
Identifier
66399/325007 / 000861311
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 기계공학과, 1988.2, [ [iv], 52, [1] p. ]

URI
http://hdl.handle.net/10203/46820
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=66399&flag=dissertation
Appears in Collection
ME-Theses_Master(석사논문)
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