Study of Flame Dynamics and Flashback Mechanism in a Gas Turbine Combustor Using Simultaneous OH-PLIF and PIV
(2010) 46:th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit- Abstract
- The present study aims to investigate the effects of burner geometry on flame characteristics, stabilization, and the occurrence of flashback using the Triple Annular Research Swirler (TARS). A premixing tube is placed at the exit of the burner. Simultaneous Planar Laser Induced Fluorescence (PLIF) of OH radicals indicating the reacting zone and Particle Image Velocimetry (PIV) for flow field mapping, were applied to study the flow- and flame-dynamics during transition from flame stabilized in the combustion chamber to flame
flashback in the mixing tube. Particular attention was placed on the flame behavior/dynamics near the lean blow out (LBO). The flow field featured a central recirculation zone (CRZ), and an annular swirling... (More) - The present study aims to investigate the effects of burner geometry on flame characteristics, stabilization, and the occurrence of flashback using the Triple Annular Research Swirler (TARS). A premixing tube is placed at the exit of the burner. Simultaneous Planar Laser Induced Fluorescence (PLIF) of OH radicals indicating the reacting zone and Particle Image Velocimetry (PIV) for flow field mapping, were applied to study the flow- and flame-dynamics during transition from flame stabilized in the combustion chamber to flame
flashback in the mixing tube. Particular attention was placed on the flame behavior/dynamics near the lean blow out (LBO). The flow field featured a central recirculation zone (CRZ), and an annular swirling jet with internal and external shears layers. The movement of the flame front relative to the upstream stagnation point of the vortex breakdown at different conditions was studied. Simultaneous planar measurements using laser diagnostics, namely, Planar Laser Induced Fluorescence (PLIF) of OH radicals and Particle Image Velocimetry (PIV), have been carried out. With mixing tube and at lean cases, vortex breakdown and the flame holding occurred close to the tube exit. As the equivalence ratio was increased, the flame entered intermittently into the premixing tube. Increasing further the equivalence ratio, the flame was stabilized inside the premixing tube. Different statistical evaluations were performed on the data to obtain better understanding of the flame stabilization mechanism. They included PDF of the axial velocity, mean velocity field and mean intensity of the OH radical, two-dimensional correlation between PIV and LIF data, POD analysis of the velocity vectors, distribution of OH radical intensity and binary images of density distribution of the seeding particles. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2543173
- author
- Hosseini, Seyed Mohammad LU ; Szász, Robert-Zoltán LU ; Iudiciani, Piero LU ; Fuchs, Laszlo LU ; Lantz, Andreas LU ; Collin, Robert LU ; Aldén, Marcus LU and Gutmark, Ephraim J.
- organization
- publishing date
- 2010
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- AIAA 2010-6668
- pages
- 10 pages
- publisher
- American Institute of Aeronautics and Astronautics
- conference name
- 46:th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit
- conference location
- Nashville, TN, United States
- conference dates
- 2010-07-25 - 2010-07-28
- external identifiers
-
- other:AIAA 2010-6668
- DOI
- 10.2514/6.2010-6668
- language
- English
- LU publication?
- yes
- id
- d92495aa-59cd-48a1-a28f-91bb4576b82c (old id 2543173)
- date added to LUP
- 2016-04-04 10:01:54
- date last changed
- 2021-02-17 12:51:10
@inproceedings{d92495aa-59cd-48a1-a28f-91bb4576b82c, abstract = {{The present study aims to investigate the effects of burner geometry on flame characteristics, stabilization, and the occurrence of flashback using the Triple Annular Research Swirler (TARS). A premixing tube is placed at the exit of the burner. Simultaneous Planar Laser Induced Fluorescence (PLIF) of OH radicals indicating the reacting zone and Particle Image Velocimetry (PIV) for flow field mapping, were applied to study the flow- and flame-dynamics during transition from flame stabilized in the combustion chamber to flame<br/><br> flashback in the mixing tube. Particular attention was placed on the flame behavior/dynamics near the lean blow out (LBO). The flow field featured a central recirculation zone (CRZ), and an annular swirling jet with internal and external shears layers. The movement of the flame front relative to the upstream stagnation point of the vortex breakdown at different conditions was studied. Simultaneous planar measurements using laser diagnostics, namely, Planar Laser Induced Fluorescence (PLIF) of OH radicals and Particle Image Velocimetry (PIV), have been carried out. With mixing tube and at lean cases, vortex breakdown and the flame holding occurred close to the tube exit. As the equivalence ratio was increased, the flame entered intermittently into the premixing tube. Increasing further the equivalence ratio, the flame was stabilized inside the premixing tube. Different statistical evaluations were performed on the data to obtain better understanding of the flame stabilization mechanism. They included PDF of the axial velocity, mean velocity field and mean intensity of the OH radical, two-dimensional correlation between PIV and LIF data, POD analysis of the velocity vectors, distribution of OH radical intensity and binary images of density distribution of the seeding particles.}}, author = {{Hosseini, Seyed Mohammad and Szász, Robert-Zoltán and Iudiciani, Piero and Fuchs, Laszlo and Lantz, Andreas and Collin, Robert and Aldén, Marcus and Gutmark, Ephraim J.}}, booktitle = {{AIAA 2010-6668}}, language = {{eng}}, publisher = {{American Institute of Aeronautics and Astronautics}}, title = {{Study of Flame Dynamics and Flashback Mechanism in a Gas Turbine Combustor Using Simultaneous OH-PLIF and PIV}}, url = {{http://dx.doi.org/10.2514/6.2010-6668}}, doi = {{10.2514/6.2010-6668}}, year = {{2010}}, }