Active control of the aerodynamic performance and tonal noise of axial turbomachines
| dc.contributor.author | Neuhaus, L. | |
| dc.contributor.author | Schulz, J. | |
| dc.contributor.author | Neise, W. | |
| dc.contributor.author | Möser, M. | |
| dc.date.accessioned | 2019-01-08T17:46:01Z | |
| dc.date.available | 2019-01-08T17:46:01Z | |
| dc.date.issued | 2003 | |
| dc.description | Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich. | de |
| dc.description | This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively. | en |
| dc.description.abstract | Two projects on axial fans are presented in this paper. The first aims at improving the aerodynamic performance and reducing the tip clearance noise caused by the rotating instability. This is achieved by injecting air into the radial gap between the impeller blade tips and the fan casing. Steady air injection with small mass flows results in remarkable reductions in the noise level along with improved aerodynamic performance. Larger injected mass flows give significant improvements in the aerodynamic performance at the expense of an increased overall noise level. The second project uses flow control actively to reduce the blade passage frequency (BPF) level. Experimental results are presented for steady jets injected into the main flow and cylindrical rods at axial positions downstream of the impeller blades. The method is successful for higher-order mode sound fields where the BPF level is reduced by up to 20.5 dB. | en |
| dc.description.sponsorship | DFB, SFB 557, Beeinflussung komplexer turbulenter Scherströmungen | en |
| dc.identifier.eissn | 2041-2967 | |
| dc.identifier.issn | 0957-6509 | |
| dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/8918 | |
| dc.identifier.uri | http://dx.doi.org/10.14279/depositonce-8047 | |
| dc.language.iso | en | |
| dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | |
| dc.subject.ddc | 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten | de |
| dc.subject.other | active noise control | en |
| dc.subject.other | active flow control | en |
| dc.subject.other | rotating instability | en |
| dc.subject.other | tip clearance noise | en |
| dc.subject.other | axial fan | en |
| dc.subject.other | fan noise | en |
| dc.subject.other | axial turbomachine | en |
| dc.subject.other | tonal noise components | en |
| dc.subject.other | vortex generator jets | en |
| dc.subject.other | air injection | en |
| dc.title | Active control of the aerodynamic performance and tonal noise of axial turbomachines | en |
| dc.type | Article | en |
| dc.type.version | publishedVersion | en |
| dcterms.bibliographicCitation.doi | 10.1243/095765003322315432 | |
| dcterms.bibliographicCitation.issue | 4 | |
| dcterms.bibliographicCitation.journaltitle | Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy | en |
| dcterms.bibliographicCitation.originalpublishername | SAGE Publications | en |
| dcterms.bibliographicCitation.originalpublisherplace | Washington, DC | en |
| dcterms.bibliographicCitation.pageend | 383 | |
| dcterms.bibliographicCitation.pagestart | 375 | |
| dcterms.bibliographicCitation.volume | 217 | |
| tub.accessrights.dnb | domain | |
| tub.affiliation | Fak. 5 Verkehrs- und Maschinensysteme::Inst. Strömungsmechanik und Technische Akustik (ISTA)::FG Experimentelle Strömungsmechanik | de |
| tub.affiliation.faculty | Fak. 5 Verkehrs- und Maschinensysteme | de |
| tub.affiliation.group | FG Experimentelle Strömungsmechanik | de |
| tub.affiliation.institute | Inst. Strömungsmechanik und Technische Akustik (ISTA) | de |
| tub.publisher.universityorinstitution | Technische Universität Berlin | de |
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