Response to acoustic forcing of laminar coflow jet diffusion flames

Handle URI:
http://hdl.handle.net/10754/564910
Title:
Response to acoustic forcing of laminar coflow jet diffusion flames
Authors:
Chrystie, Robin ( 0000-0002-4012-3211 ) ; Chung, Suk-Ho ( 0000-0001-8782-312X )
Abstract:
Toward the goal of understanding and controlling instability in combustion systems, we present a fundamental characterization of the interaction of the buoyancy-induced instability in flickering flames with forced excitation of fuel supply. Laminar coflow diffusion flames were acoustically forced, whose frequency responses were recorded as a function of excitation frequency and amplitude. The evolving structure of such flames was also examined through the use of video analysis and particle imaging velocimetry (PIV). For specific combinations of excitation frequency and amplitude, the frequency response of the flames was found to couple to that of the forcing, where the contribution of natural puffing frequency disappears. Such instances of coupling exhibited many harmonics of the excitation frequency, related indirectly to the natural puffing frequency. We showed how such harmonics form, through application of PIV, and furthermore unveiled insight into the physics of how the flame couples to the forcing under certain conditions. Our frequency response characterization provides quantitative results, which are of utility for both modeling studies and active-control strategies. Copyright © Taylor & Francis Group, LLC.
KAUST Department:
Clean Combustion Research Center; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Combustion and Laser Diagnostics Laboratory
Publisher:
Informa UK Limited
Journal:
Combustion Science and Technology
Issue Date:
23-Apr-2014
DOI:
10.1080/00102202.2014.883202
Type:
Article
ISSN:
00102202
Sponsors:
This work was supported by KAUST.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorChrystie, Robinen
dc.contributor.authorChung, Suk-Hoen
dc.date.accessioned2015-08-04T07:24:52Zen
dc.date.available2015-08-04T07:24:52Zen
dc.date.issued2014-04-23en
dc.identifier.issn00102202en
dc.identifier.doi10.1080/00102202.2014.883202en
dc.identifier.urihttp://hdl.handle.net/10754/564910en
dc.description.abstractToward the goal of understanding and controlling instability in combustion systems, we present a fundamental characterization of the interaction of the buoyancy-induced instability in flickering flames with forced excitation of fuel supply. Laminar coflow diffusion flames were acoustically forced, whose frequency responses were recorded as a function of excitation frequency and amplitude. The evolving structure of such flames was also examined through the use of video analysis and particle imaging velocimetry (PIV). For specific combinations of excitation frequency and amplitude, the frequency response of the flames was found to couple to that of the forcing, where the contribution of natural puffing frequency disappears. Such instances of coupling exhibited many harmonics of the excitation frequency, related indirectly to the natural puffing frequency. We showed how such harmonics form, through application of PIV, and furthermore unveiled insight into the physics of how the flame couples to the forcing under certain conditions. Our frequency response characterization provides quantitative results, which are of utility for both modeling studies and active-control strategies. Copyright © Taylor & Francis Group, LLC.en
dc.description.sponsorshipThis work was supported by KAUST.en
dc.publisherInforma UK Limiteden
dc.subjectAcoustic forcingen
dc.titleResponse to acoustic forcing of laminar coflow jet diffusion flamesen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentCombustion and Laser Diagnostics Laboratoryen
dc.identifier.journalCombustion Science and Technologyen
kaust.authorChrystie, Robinen
kaust.authorChung, Suk-Hoen
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