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dc.contributor.authorXu, Liangliang
dc.contributor.authorZhang, Guangyu
dc.contributor.authorWang, Guoqing
dc.contributor.authorFeng, Zhenzhen
dc.contributor.authorTian, Xiaojing
dc.contributor.authorLi, Lei
dc.contributor.authorQi, Fei
dc.date.accessioned2021-09-12T11:26:27Z
dc.date.available2021-09-12T11:26:27Z
dc.date.issued2021-08-26
dc.date.submitted2020-11-03
dc.identifier.citationXu, L., Zhang, G., Wang, G., Feng, Z., Tian, X., Li, L., & Qi, F. (2021). Effects of acoustic liner on thermoacoustic instabilities in a premixed swirl combustor. Aerospace Science and Technology, 118, 107070. doi:10.1016/j.ast.2021.107070
dc.identifier.issn1270-9638
dc.identifier.doi10.1016/j.ast.2021.107070
dc.identifier.urihttp://hdl.handle.net/10754/671145
dc.description.abstractAcoustic liner is generally adopted to damp noise in aero-engines and gas turbines. This paper presents a systematic study about the effects of an acoustic liner on thermoacoustic instabilities in a laboratory scale burner. A premixed swirl combustion system is constructed and a specially designed single layer acoustic liner is located at downstream of the flame zone. A low order network model is built to recognize the thermoacoustic modes of the combustion system. The Transfer Element Method (TEM) method is applied to analyze the absorption of the acoustic liner with bias flow. Experiments under the boundaries of the rigid wall and the acoustic liner without and with tunable bias flow are carried out, respectively. Furthermore, the temperature of the bias flow is adjusted to evaluate its effects on combustion oscillations. The result of low order modeling shows that the low-frequency mode around 116 Hz is the Helmholtz mode of the upstream plenum, while the higher frequency mode near 300 Hz is the quarter wave mode of the combustion chamber. The experimental result shows that the instability of the Helmholtz mode can be triggered and further enhanced with the increase of the bias flow Mach number. Meanwhile, the instability of the 1/4 wave mode is completely suppressed. The Helmholtz mode that is triggered by the bias flow can be attenuated by raising the temperature of the bias flow, while no substantial changes are observed in the quarter wave mode.
dc.description.sponsorshipAn earlier version [76] of this paper was presented at the International Conference on ASME Turbo Expo 2019, Atlanta, USA. It is much appreciated that the reviewers and the audiences of the lecture gave us so many precious recommendations to improve our work of this article. This research is supported by National Natural Science Foundation of China (51676126 and 51776191).
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S1270963821005800
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Aerospace Science and Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Aerospace Science and Technology, [118, , (2021-08-26)] DOI: 10.1016/j.ast.2021.107070 . © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleEffects of acoustic liner on thermoacoustic instabilities in a premixed swirl combustor
dc.typeArticle
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalAerospace Science and Technology
dc.rights.embargodate2023-09-06
dc.eprint.versionPost-print
dc.contributor.institutionSchool of Mechanical Engineering, Shanghai Jiao Tong University, No.800 Dongchuan Road, Minhang District, Shanghai, P.R. China
dc.contributor.institutionSchool of Energy and Power Engineering, Beihang University, No.37 Xueyuan Road, Haidian District, Beijing, P.R. China
dc.contributor.institutionProduct R&D center, Dongfang Turbine Co., LTD., Deyang, Sichuan, P.R. China
dc.identifier.volume118
dc.identifier.pages107070
kaust.personWang, Guoqing
dc.date.accepted2021-08-20
dc.identifier.eid2-s2.0-85114242365
refterms.dateFOA2021-09-16T10:53:04Z
dc.date.published-online2021-08-26
dc.date.published-print2021-11


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