Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 유지형 | - |
dc.date.accessioned | 2019-03-19T04:53:58Z | - |
dc.date.available | 2019-03-19T04:53:58Z | - |
dc.date.issued | 2016-11 | - |
dc.identifier.citation | IEEE TRANSACTIONS ON PLASMA SCIENCE, v. 44, Issue 12, Page. 2940-2951 | en_US |
dc.identifier.issn | 0093-3813 | - |
dc.identifier.issn | 1939-9375 | - |
dc.identifier.uri | https://ieeexplore.ieee.org/document/7738575 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/100976 | - |
dc.description.abstract | The primary aim of this paper is to establish the effectiveness of microwave plasma discharges to improve combustor flame dynamics and stability through minimizing heat release fluctuations. A continuous, volumetric, direct coupled, nonequilibrium, atmospheric microwave plasma discharge was applied to a swirl-stabilized premixed methane-air flame to minimize combustion instabilities. Proper orthogonal decomposition (POD) is used to postprocess data and extract information on flame dynamics that are usually lost through classical statistical approaches. POD analysis carried out on OH planar laser-induced fluorescence images reveals that even at coupled plasma powers corresponding to less than 5% of the thermal power output, significant improvement in mean energy content of flames (similar to 23%) was observed. The corresponding decrease in heat release fluctuations resulted in improved combustor flame dynamics and flame stability, which was found to be in good agreement with acoustic pressure measurements. In the presence of plasma discharge, an effective decoupling between the flame oscillations and the fluid unsteadiness was established due to the differences in flame stabilization mechanisms resulting in up to 47% reduction in root-mean-square pressure fluctuations. Thus, effective fluid-acoustic decoupling in addition to the accelerated combustion chemistry due to the nonthermal effects of plasma led to significantly improved combustor dynamics, namely, decreased heat release and pressure fluctuations. | en_US |
dc.description.sponsorship | This work was supported in part by the Air Force Office of Scientific Research under Grant FA9550-14-1-0343 with Dr. Chiping Li as Program Manager and in part by the Air Force Research Laboratory under Grant FA8650-15-C-2547. | en_US |
dc.language.iso | en | en_US |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | en_US |
dc.subject | Combustion instability | en_US |
dc.subject | direct coupling | en_US |
dc.subject | eigen-modes | en_US |
dc.subject | flame dynamics | en_US |
dc.subject | method of snapshots | en_US |
dc.subject | nonequilibrium effects | en_US |
dc.subject | OH planar laser-induced fluorescence (OH-PLIF) | en_US |
dc.subject | plasma-assisted combustion (PAC) | en_US |
dc.subject | pressure fluctuations | en_US |
dc.subject | proper orthogonal decomposition (POD) | en_US |
dc.subject | swirl stabilization | en_US |
dc.title | Proper Orthogonal Decomposition for Analysis of Plasma-Assisted Premixed Swirl-Stabilized Flame Dynamics | en_US |
dc.type | Article | en_US |
dc.relation.volume | 44 | - |
dc.identifier.doi | 10.1109/TPS.2016.2622687 | - |
dc.relation.page | 2940-2951 | - |
dc.relation.journal | IEEE TRANSACTIONS ON PLASMA SCIENCE | - |
dc.contributor.googleauthor | Rajasegar, Rajavasanth | - |
dc.contributor.googleauthor | Mitsingas, Constandinos M. | - |
dc.contributor.googleauthor | Mayhew, Eric K. | - |
dc.contributor.googleauthor | Yoo, Jihyung | - |
dc.contributor.googleauthor | Lee, Tonghun | - |
dc.relation.code | 2016000884 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF AUTOMOTIVE ENGINEERING | - |
dc.identifier.pid | jihyungyoo | - |
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