Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106470
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Mechanical Engineering | - |
dc.creator | Xia, X | en_US |
dc.creator | Zhang, P | en_US |
dc.date.accessioned | 2024-05-09T00:53:44Z | - |
dc.date.available | 2024-05-09T00:53:44Z | - |
dc.identifier.issn | 0022-1120 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/106470 | - |
dc.language.iso | en | en_US |
dc.publisher | Cambridge University Press | en_US |
dc.rights | This article has been published in a revised form in Journal of Fluid Mechanics http://doi.org/10.1017/jfm.2018.707. This version is free to view and download for private research and study only. Not for re-distribution or re-use. © Cambridge University Press 2018. | en_US |
dc.subject | Flames | en_US |
dc.subject | Instability | en_US |
dc.subject | Vortex flows | en_US |
dc.title | A vortex-dynamical scaling theory for flickering buoyant diffusion flames | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 1156 | en_US |
dc.identifier.epage | 1169 | en_US |
dc.identifier.volume | 855 | en_US |
dc.identifier.doi | 10.1017/jfm.2018.707 | en_US |
dcterms.abstract | The flickering of buoyant diffusion flames is associated with the periodic shedding of toroidal vortices that are formed under gravity-induced shearing at the flame surface. Numerous experimental investigations have confirmed the scaling, f ∝ D−1/2, where f is the flickering frequency and D is the diameter of the fuel inlet. However, the connection between the toroidal vortex dynamics and the scaling has not been clearly understood. By incorporating the finding of Gharib et al. (J. Fluid Mech., vol. 360, 1998, pp. 121–140) that the detachment of a continuously growing vortex ring is inevitable and can be dictated by a universal constant that is essentially a non-dimensional circulation of the vortex, we theoretically established the connection between the periodicity of the toroidal vortices and the flickering of a buoyant diffusion flame with small Froude number. The scaling theory for flickering frequency was validated by the existing experimental data of pool flames and jet diffusion flames. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Journal of fluid mechanics, 25 Nov. 2018, v. 855, p. 1156-1169 | en_US |
dcterms.isPartOf | Journal of fluid mechanics | en_US |
dcterms.issued | 2018-11-25 | - |
dc.identifier.scopus | 2-s2.0-85054714791 | - |
dc.identifier.eissn | 1469-7645 | en_US |
dc.description.validate | 202405 bcch | - |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | ME-0564 | - |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | National Natural Science Foundation of China; PolyU; Key Laboratory of High-temperature Gas Dynamics, Chinese Academy of Sciences | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 14479940 | - |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
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Xia_Vortex-Dynamical_Scaling_Theory.pdf | Pre-Published version | 2.26 MB | Adobe PDF | View/Open |
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