Proper Orthogonal Decomposition Analysis of Non-Swirling Turbulent Stratified and Premixed Methane/Air Flames
(2014) ASME Turbo Expo: Turbine Technical Conference and Exposition 4B.- Abstract
- This paper reports proper orthogonal decomposition (POD) analyses for the velocity fields measured in a test burner. The Cambridge/Sandia Stratified Swirl Burner has been used in various studies as a benchmark for high resolution scalar and velocity measurements, for comparison with numerical model prediction. Flow field data was collected for a series of bluff-body stabilized premixed and stratified methane/air flames at turbulent, globally lean conditions (phi = 0.75) using high speed stereoscopic particle image velocimetry (HS-SPIV). In this paper, a modal analysis was performed to identify the large scale flow structures and their impact on the flame dynamics. The high speed PIV system was operated at 3 kHz to acquire a series of 4096... (More)
- This paper reports proper orthogonal decomposition (POD) analyses for the velocity fields measured in a test burner. The Cambridge/Sandia Stratified Swirl Burner has been used in various studies as a benchmark for high resolution scalar and velocity measurements, for comparison with numerical model prediction. Flow field data was collected for a series of bluff-body stabilized premixed and stratified methane/air flames at turbulent, globally lean conditions (phi = 0.75) using high speed stereoscopic particle image velocimetry (HS-SPIV). In this paper, a modal analysis was performed to identify the large scale flow structures and their impact on the flame dynamics. The high speed PIV system was operated at 3 kHz to acquire a series of 4096 sequential flow field images both for reactive and non-reactive cases, sufficient to follow the large-scale spatial and temporal evolution of flame and flow dynamics. The POD analysis allows identification of vortical structures, created by the bluff body, and in the shear layers surrounding the stabilization point. In addition, the analysis reveals that dominant structures are a strong function of the mixture stratification in the flow field. The dominant energetic modes of reactive and non-reactive flows are very different, as the expansion of gases and the high temperatures alter the unstable modes and their survival in the flow. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/8227430
- author
- Kamal, M. Mustafa ; Duwig, Christophe LU ; Balusamy, Saravanan ; Zhou, Ruigang and Hochgreb, Simone
- organization
- publishing date
- 2014
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Proceedings of the ASME Turbo Expo: Turbine Technical Conference and Exposition, 2014
- volume
- 4B
- article number
- GT2014-26222
- pages
- 11 pages
- publisher
- Amer. Soc. Mechanical Engineers
- conference name
- ASME Turbo Expo: Turbine Technical Conference and Exposition
- conference dates
- 2014-06-16 - 2014-06-20
- external identifiers
-
- wos:000362059000023
- scopus:84961349316
- DOI
- 10.1115/GT2014-26222
- language
- English
- LU publication?
- yes
- id
- e49176fe-6b94-40c2-8c9e-31865792a352 (old id 8227430)
- date added to LUP
- 2016-04-04 10:43:50
- date last changed
- 2022-04-08 06:04:36
@inproceedings{e49176fe-6b94-40c2-8c9e-31865792a352,
abstract = {{This paper reports proper orthogonal decomposition (POD) analyses for the velocity fields measured in a test burner. The Cambridge/Sandia Stratified Swirl Burner has been used in various studies as a benchmark for high resolution scalar and velocity measurements, for comparison with numerical model prediction. Flow field data was collected for a series of bluff-body stabilized premixed and stratified methane/air flames at turbulent, globally lean conditions (phi = 0.75) using high speed stereoscopic particle image velocimetry (HS-SPIV). In this paper, a modal analysis was performed to identify the large scale flow structures and their impact on the flame dynamics. The high speed PIV system was operated at 3 kHz to acquire a series of 4096 sequential flow field images both for reactive and non-reactive cases, sufficient to follow the large-scale spatial and temporal evolution of flame and flow dynamics. The POD analysis allows identification of vortical structures, created by the bluff body, and in the shear layers surrounding the stabilization point. In addition, the analysis reveals that dominant structures are a strong function of the mixture stratification in the flow field. The dominant energetic modes of reactive and non-reactive flows are very different, as the expansion of gases and the high temperatures alter the unstable modes and their survival in the flow.}},
author = {{Kamal, M. Mustafa and Duwig, Christophe and Balusamy, Saravanan and Zhou, Ruigang and Hochgreb, Simone}},
booktitle = {{Proceedings of the ASME Turbo Expo: Turbine Technical Conference and Exposition, 2014}},
language = {{eng}},
publisher = {{Amer. Soc. Mechanical Engineers}},
title = {{Proper Orthogonal Decomposition Analysis of Non-Swirling Turbulent Stratified and Premixed Methane/Air Flames}},
url = {{http://dx.doi.org/10.1115/GT2014-26222}},
doi = {{10.1115/GT2014-26222}},
volume = {{4B}},
year = {{2014}},
}