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The Cremer impedance: An investigation of the low frequency behavior
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, MWL Marcus Wallenberg Laboratoriet. KTH, Skolan för industriell teknik och management (ITM), Centra, Competence Center for Gas Exchange (CCGEx).
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, MWL Marcus Wallenberg Laboratoriet. KTH, Skolan för industriell teknik och management (ITM), Centra, Competence Center for Gas Exchange (CCGEx).ORCID-id: 0000-0002-8474-8563
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, MWL Marcus Wallenberg Laboratoriet. KTH, Skolan för industriell teknik och management (ITM), Centra, Competence Center for Gas Exchange (CCGEx).ORCID-id: 0000-0001-7898-8643
2019 (engelsk)Inngår i: Journal of Sound and Vibration, ISSN 0022-460X, E-ISSN 1095-8568, Vol. 459, artikkel-id 114844Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The Cremer impedance concept based on mode merging is one method that can substantially improve the axial damping in a waveguide. Previous works on the Cremer impedance including a uniform grazing flow have exhibited unexpected phenomenon such as negative resistance in the low frequency range. The current paper is a continuation of earlier works by the authors to extend the investigation of the Cremer impedance with a focus on the low frequency range. Two independent investigations from the perspective of boundary layer effects and mode merging patterns are conducted to better understand the low frequency behavior of the Cremer impedance.

sted, utgiver, år, opplag, sider
Academic Press, 2019. Vol. 459, artikkel-id 114844
Emneord [en]
Cremer impedance, Low frequency range, Negative resistance, Boundary condition, Mode merging
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Identifikatorer
URN: urn:nbn:se:kth:diva-257424DOI: 10.1016/j.jsv.2019.07.010ISI: 000481404000034Scopus ID: 2-s2.0-85070731741OAI: oai:DiVA.org:kth-257424DiVA, id: diva2:1347702
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QC 20190902

Tilgjengelig fra: 2019-09-02 Laget: 2019-09-02 Sist oppdatert: 2019-09-05bibliografisk kontrollert

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Zhang, ZheBodén, HansÅbom, Mats

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