Extended Proper Orthogonal Decomposition for Analysis of Unsteady Flames
(2010) In Flow, Turbulence and Combustion 84(1). p.25-47- Abstract
- The aim of this work is to present the use of proper orthogonal decomposition (POD) and extended proper orthogonal decomposition (EPOD) for revealing flame dynamics as a set of statistical quantities referred as modes. The flame fluctuations are used to derive an empirical functions base representing the most important features of the flame. The capabilities of the technique are exemplified in the case of an unsteady laminar flame. The flame is naturally unsteady and can be excited to amplify the fluctuations. The data base consists of synchronous Particle Image Velocimetry (PIV) and OH-Planar Laser Induced Fluorescence (OH-PLIF) measurements. It was found that the POD based upon the PIV vectors only reveals flow features when the... (More)
- The aim of this work is to present the use of proper orthogonal decomposition (POD) and extended proper orthogonal decomposition (EPOD) for revealing flame dynamics as a set of statistical quantities referred as modes. The flame fluctuations are used to derive an empirical functions base representing the most important features of the flame. The capabilities of the technique are exemplified in the case of an unsteady laminar flame. The flame is naturally unsteady and can be excited to amplify the fluctuations. The data base consists of synchronous Particle Image Velocimetry (PIV) and OH-Planar Laser Induced Fluorescence (OH-PLIF) measurements. It was found that the POD based upon the PIV vectors only reveals flow features when the excitation is added. On contrary, the OH-PLIF based POD performs well in any case and constitutes a suitable base for the EPOD analysis. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1535772
- author
- Duwig, Christophe LU and Iudiciani, Piero LU
- organization
- publishing date
- 2010
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Proper orthogonal decomposition, Linear stochastic estimation, Conditional averaging, Laminar flame dynamics
- in
- Flow, Turbulence and Combustion
- volume
- 84
- issue
- 1
- pages
- 25 - 47
- publisher
- Springer
- external identifiers
-
- wos:000271199700002
- scopus:70350568731
- ISSN
- 1573-1987
- DOI
- 10.1007/s10494-009-9210-6
- language
- English
- LU publication?
- yes
- id
- a959bcd8-e2be-4480-921e-867b6b5c92d6 (old id 1535772)
- date added to LUP
- 2016-04-01 10:06:48
- date last changed
- 2022-04-04 02:29:21
@article{a959bcd8-e2be-4480-921e-867b6b5c92d6,
abstract = {{The aim of this work is to present the use of proper orthogonal decomposition (POD) and extended proper orthogonal decomposition (EPOD) for revealing flame dynamics as a set of statistical quantities referred as modes. The flame fluctuations are used to derive an empirical functions base representing the most important features of the flame. The capabilities of the technique are exemplified in the case of an unsteady laminar flame. The flame is naturally unsteady and can be excited to amplify the fluctuations. The data base consists of synchronous Particle Image Velocimetry (PIV) and OH-Planar Laser Induced Fluorescence (OH-PLIF) measurements. It was found that the POD based upon the PIV vectors only reveals flow features when the excitation is added. On contrary, the OH-PLIF based POD performs well in any case and constitutes a suitable base for the EPOD analysis.}},
author = {{Duwig, Christophe and Iudiciani, Piero}},
issn = {{1573-1987}},
keywords = {{Proper orthogonal decomposition; Linear stochastic estimation; Conditional averaging; Laminar flame dynamics}},
language = {{eng}},
number = {{1}},
pages = {{25--47}},
publisher = {{Springer}},
series = {{Flow, Turbulence and Combustion}},
title = {{Extended Proper Orthogonal Decomposition for Analysis of Unsteady Flames}},
url = {{http://dx.doi.org/10.1007/s10494-009-9210-6}},
doi = {{10.1007/s10494-009-9210-6}},
volume = {{84}},
year = {{2010}},
}