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Acoustic scattering...
Acoustic scattering in a small centrifugal compressor based on the use of linearized equations in a rotating frame
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- Jacob, Stefan, Dr. 1980- (författare)
- KTH,Strömningsmekanik och Teknisk Akustik,Competence Center for Gas Exchange (CCGEx),Leibniz Institute for Solid State and Materials Research, Helmholzstrasse 4, Dresden, Germany,CCGEx
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- Trigell, Emelie (författare)
- KTH,Strömningsmekanik och Teknisk Akustik
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- Mihaescu, Mihai, Professor, 1976- (författare)
- KTH,Strömningsmekanik och Teknisk Akustik
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- Åbom, Mats, 1954- (författare)
- KTH,Farkostteknik och Solidmekanik
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(creator_code:org_t)
- Elsevier, 2023
- 2023
- Engelska.
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Ingår i: Journal of Sound and Vibration. - : Elsevier. - 0022-460X .- 1095-8568. ; 544, s. 117315-117315
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Numerical solutions of acoustic wave scattering are often used to describe sound propagation through complex geometries. For cases with flow, various forms of the convected equation have been used. A better alternative that includes vortex-sound interaction is instead to use the linearized and harmonic forms of the unsteady fluid flow governing equations. In this paper, a formulation of the linearized equations that include rotational effects, in an acoustic computation using a rotating frame of reference in a stationary geometry, is presented. We demonstrate that rotational effects can be important, e.g., when computing the transmission loss through high-speed compressors. The implementation of the proposed addition to the existing schemes is both simple and numerically inexpensive. The results are expected to have an impact on the research and development related to noise control of high-performance turbo-machinery, e.g., used in automotive or aviation applications at operating conditions that can be represented by steady background flows.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Farkostteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Vehicle Engineering (hsv//eng)
Nyckelord
- Acoustic scattering
- compressor noise
- linearized equations
- experiments
- Teknisk mekanik
- Engineering Mechanics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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