Comparison of LES Models Applied to a Bluff Body Stabilized Flame
(2009) 47th AIAA Aerospace Sciences Meeting- Abstract
- Present-day demands on combustion equipment are increasing the need for improved understanding and prediction of turbulent combustion. Large Eddy Simulation (LES), in which the large-scale flow is resolved on the grid, leaving only the small-scale flow to be modeled, provides a natural framework for combustion calculations as the transient nature of the flow is resolved. In most situations, however, the flame is thinner than the LES grid, and subgrid modeling is required to handle the turbulence-chemistry interaction. Here, we examine the predictive capabilities and the theoretical links between LES flamelet models, such as the G-equation model (G-LES), and LES finite rate chemistry models, such as the Thickened Flame Model (TFM-LES), the... (More)
- Present-day demands on combustion equipment are increasing the need for improved understanding and prediction of turbulent combustion. Large Eddy Simulation (LES), in which the large-scale flow is resolved on the grid, leaving only the small-scale flow to be modeled, provides a natural framework for combustion calculations as the transient nature of the flow is resolved. In most situations, however, the flame is thinner than the LES grid, and subgrid modeling is required to handle the turbulence-chemistry interaction. Here, we examine the predictive capabilities and the theoretical links between LES flamelet models, such as the G-equation model (G-LES), and LES finite rate chemistry models, such as the Thickened Flame Model (TFM-LES), the Partially Stirred Reactor model (PaSR-LES), the Eddy Dissipation Concept (EDC-LES) model, a Presumed Probability Density Function (PPDF-LES) model and the Implicit LES (QL-LES) model. The models are described, and theoretical links between these are discussed in terms of the turbulent flame speed and flame thickness. In addition, the different models are used to study a bluff-body stabilized flame and the resulting predictions are compared with experimental data for two operating conditions. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1488161
- author
- Baudoin, Eric LU ; Yu, Rixin LU ; Nogenmyr, Karl-Johan LU ; Bai, Xue-Song LU and Fureby, Christer
- organization
- publishing date
- 2009
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Conference Proceeding Series, Digital
- publisher
- AIAA
- conference name
- 47th AIAA Aerospace Sciences Meeting
- conference dates
- 2009-01-05 - 2009-01-08
- external identifiers
-
- scopus:78549266871
- language
- English
- LU publication?
- yes
- id
- 6cbaf775-2eb8-4c68-8992-dda0fc3ea3eb (old id 1488161)
- date added to LUP
- 2016-04-04 10:10:09
- date last changed
- 2022-04-23 22:37:46
@inproceedings{6cbaf775-2eb8-4c68-8992-dda0fc3ea3eb, abstract = {{Present-day demands on combustion equipment are increasing the need for improved understanding and prediction of turbulent combustion. Large Eddy Simulation (LES), in which the large-scale flow is resolved on the grid, leaving only the small-scale flow to be modeled, provides a natural framework for combustion calculations as the transient nature of the flow is resolved. In most situations, however, the flame is thinner than the LES grid, and subgrid modeling is required to handle the turbulence-chemistry interaction. Here, we examine the predictive capabilities and the theoretical links between LES flamelet models, such as the G-equation model (G-LES), and LES finite rate chemistry models, such as the Thickened Flame Model (TFM-LES), the Partially Stirred Reactor model (PaSR-LES), the Eddy Dissipation Concept (EDC-LES) model, a Presumed Probability Density Function (PPDF-LES) model and the Implicit LES (QL-LES) model. The models are described, and theoretical links between these are discussed in terms of the turbulent flame speed and flame thickness. In addition, the different models are used to study a bluff-body stabilized flame and the resulting predictions are compared with experimental data for two operating conditions.}}, author = {{Baudoin, Eric and Yu, Rixin and Nogenmyr, Karl-Johan and Bai, Xue-Song and Fureby, Christer}}, booktitle = {{Conference Proceeding Series, Digital}}, language = {{eng}}, publisher = {{AIAA}}, title = {{Comparison of LES Models Applied to a Bluff Body Stabilized Flame}}, year = {{2009}}, }