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dc.contributor.authorKabbaj, Narjisse
dc.contributor.authorIm, Hong G.
dc.date.accessioned2023-03-14T09:47:28Z
dc.date.available2023-03-14T09:47:28Z
dc.date.issued2023-01-17
dc.identifier.doi10.1080/13647830.2023.2165965en_US
dc.identifier.urihttp://hdl.handle.net/20.500.14131/648
dc.description.abstractTo provide fundamental insights into the response of laminar flames to alternating current (AC) electric fields, a simplified one-dimensional model using an ionised layer model is formulated with the conservation equations for the ion species with ionisation, recombination, and transport due to molecular diffusion and electric mobility. A parametric study is conducted to investigate the response of the ion layer at different voltages and oscillation frequencies, and the results are examined mainly in terms of the net current–voltage (I–V) characteristics. As the oscillation frequency is increased, a nonmonotonic response in the I–V curve is seen such that the current may exceed the saturation condition corresponding to the steady DC condition. In general the current reaches a peak as the unsteady time scale becomes comparable to the ion transport time scale, which is dictated by the mobility, and eventually becomes attenuated at higher frequencies to behave like a low-pass filter. The extent of the peak current rise and the cut-off frequency are found to depend on the characteristic time scales of the ion chemistry and mobility-induced transport. The simplified model serves as a framework to characterise the behaviour of complex flames in terms of the dominant ionisation and transport processes. The current overshoot behaviour may also imply that the overall effect of the electric field may be further magnified under the AC conditions, motivating further studies of multi-dimensional flames for the ionic wind effects.en_US
dc.description.sponsorshipKAUSTen_US
dc.publisherTaylor & Francisen_US
dc.subjectElectric Field Effectsen_US
dc.subjectIon Transporten_US
dc.subjectUnsteady Flamesen_US
dc.subjectAC Voltage Responseen_US
dc.titleResponse of one-dimensional ionised layer to oscillatory electric fieldsen_US
dc.source.journalCombustion Theory and Modellingen_US
dc.contributor.researcherExternal Collaborationen_US
dc.contributor.labEnergy Laben_US
dc.subject.KSAENERGYen_US
dc.source.indexScopusen_US
dc.source.indexWoSen_US
dc.contributor.departmentElectrical and Computer Engineeringen_US
dc.contributor.firstauthorKabbaj, Narjisse


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