DC Field | Value | Language |
---|---|---|
dc.contributor.author | 허대영 | - |
dc.contributor.author | 이덕주 | - |
dc.date.accessioned | 2013-03-16T23:13:47Z | - |
dc.date.available | 2013-03-16T23:13:47Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2000-06-22 | - |
dc.identifier.citation | 창립10주년기념 소음진동학술대회 , v., no., pp.104 - 109 | - |
dc.identifier.uri | http://hdl.handle.net/10203/137109 | - |
dc.description.abstract | The modes of oscillation and radiated acoustic fields of compressible flows over open cavities are investigated computationally. The compressible Navier-Stokes equations are solved for two-dimensional cavities with laminar boundary layers upstream. The high-order and high-resolution numerical schemes are used for the evaluation of spatial derivatives and the time integration. Physically correct numerical boundary conditions are implemented to produce time-accurate solutions in the whole computation domain. The computational domain is large enough to directly resolve a portion of the radiated acoutic field. The results show a transition from a shear layer mode, for shorter cavities and lower Mach numbers, to a wake mode for longer cavities and higher Mach numbers. The shear layer mode is well characterized by Rossiter modes and these oscillations lead to intense upstream acoustic radiation dominated by a single frequency. The wake mode is characterized instead by a large-scale vortex shedding. Acoustic radiation is more intense, with multiple frequencies present. | - |
dc.language | KOR | - |
dc.publisher | 한국소음진동공학회 | - |
dc.title | 공동을 지나는 비정상 유동에 의한 소음 방사 해석 | - |
dc.title.alternative | Numerical Investigation of Sound Generation in the Flow Past a Cavity | - |
dc.type | Conference | - |
dc.type.rims | CONF | - |
dc.citation.beginningpage | 104 | - |
dc.citation.endingpage | 109 | - |
dc.citation.publicationname | 창립10주년기념 소음진동학술대회 | - |
dc.identifier.conferencecountry | South Korea | - |
dc.identifier.conferencecountry | South Korea | - |
dc.contributor.localauthor | 이덕주 | - |
dc.contributor.nonIdAuthor | 허대영 | - |
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