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dc.contributor.authorMurugesan, Men
dc.contributor.authorBalusamy, Sen
dc.contributor.authorHochgreb, Simoneen
dc.contributor.authorLi, LKBen
dc.date.accessioned2018-11-23T00:30:24Z
dc.date.available2018-11-23T00:30:24Z
dc.date.issued2017-01-01en
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/285740
dc.description.abstractWe use recurrence analysis to investigate the forced synchronization of a self-excited thermoacoustic system. The system consists of a swirl-stabilized turbulent premixed flame in an open-ended duct. We apply periodic acoustic forcing to this system at different amplitudes and frequencies around its natural self-excited frequency, and examine its response via unsteady pressure measurements. On increasing the forcing amplitude, we observe two bifurcations: from a periodic limit cycle (unforced) to quasiperiodicity (weak forcing) and then to lock-in (strong forcing). To analyse these bifurcations, we use cross-recurrence plots (CRPs) of the unsteady pressure and acoustic forcing. We find that the different time scales characterizing the quasiperiodicity and the transition to lock-in appear as distinct structures in the CRPs. We then examine those structures using cross recurrence quantification analysis (CRQA) and find that their recurrence quantities change even before the system transitions to lock-in. This shows that CRPs and CRQA can be used as alternative nonlinear tools to study forced synchronization in thermoacoustic systems, complementing classical linear tools such as spectral analysis.
dc.description.sponsorshipEPSRC
dc.titleRecurrence analysis of forced synchronization in a self-excited thermoacoustic systemen
dc.typeConference Object
prism.publicationDate2017en
prism.publicationName24th International Congress on Sound and Vibration, ICSV 2017en
dc.identifier.doi10.17863/CAM.33084
dcterms.dateAccepted2017-02-28en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2017-01-01en
dc.contributor.orcidHochgreb, Simone [0000-0001-7192-4786]
rioxxterms.typeConference Paper/Proceeding/Abstracten
rioxxterms.freetoread.startdate2018-01-01


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