Numerical study of thermo-acoustic waves generation by a swirling flame using a new approach based on large eddy simulation
(2005) ASME Turbo Expo 2005 - Gas Turbie Technology: Focus for the Future 2. p.67-75- Abstract
- The new challenge of the Gas Turbine industry is to develop new technologies for meeting electricity demand growth and reducing harmful emissions. Thus, a better understanding of the combustion phenomenon and an improvement in simulation capabilities are needed. In this paper, we present a new technique that is computationally efficient, for capturing the thermo-acoustic waves in low Mach number combustors. The idea is to utilize the fact that the acoustic related pressure fluctuations are small as compared to the dynamic pressure. Semi-compressible LES of reacting flow is performed and while the pressure perturbations related to the acoustic-wave propagation are handled separately. The equations are solved individually while allowing... (More)
- The new challenge of the Gas Turbine industry is to develop new technologies for meeting electricity demand growth and reducing harmful emissions. Thus, a better understanding of the combustion phenomenon and an improvement in simulation capabilities are needed. In this paper, we present a new technique that is computationally efficient, for capturing the thermo-acoustic waves in low Mach number combustors. The idea is to utilize the fact that the acoustic related pressure fluctuations are small as compared to the dynamic pressure. Semi-compressible LES of reacting flow is performed and while the pressure perturbations related to the acoustic-wave propagation are handled separately. The equations are solved individually while allowing interaction between the two systems. The technique has been applied to the study of the generation and propagation of thermo-acoustic waves in a combustion chamber. A sensitivity analysis is presented and most important instability modes are identified. Copyright (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/615595
- author
- Duwig, Christophe LU ; Gherman, Bogdan, George LU ; Mihaescu, Mihai LU ; Salewski, Mirko LU and Fuchs, Laszlo LU
- organization
- publishing date
- 2005
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Electricity demand growth, Mach number, Thermo-acoustic waves
- host publication
- Proceedings of the ASME Turbo Expo
- volume
- 2
- pages
- 67 - 75
- publisher
- American Society Of Mechanical Engineers (ASME)
- conference name
- ASME Turbo Expo 2005 - Gas Turbie Technology: Focus for the Future
- conference location
- Reno-Tahoe, NV, United States
- conference dates
- 2005-06-06 - 2005-06-09
- external identifiers
-
- wos:000243376400007
- scopus:27744605925
- language
- English
- LU publication?
- yes
- id
- 32a18d4a-1b65-4edc-aa4a-5e11202c9eb8 (old id 615595)
- date added to LUP
- 2016-04-04 11:19:32
- date last changed
- 2022-01-29 21:41:46
@inproceedings{32a18d4a-1b65-4edc-aa4a-5e11202c9eb8, abstract = {{The new challenge of the Gas Turbine industry is to develop new technologies for meeting electricity demand growth and reducing harmful emissions. Thus, a better understanding of the combustion phenomenon and an improvement in simulation capabilities are needed. In this paper, we present a new technique that is computationally efficient, for capturing the thermo-acoustic waves in low Mach number combustors. The idea is to utilize the fact that the acoustic related pressure fluctuations are small as compared to the dynamic pressure. Semi-compressible LES of reacting flow is performed and while the pressure perturbations related to the acoustic-wave propagation are handled separately. The equations are solved individually while allowing interaction between the two systems. The technique has been applied to the study of the generation and propagation of thermo-acoustic waves in a combustion chamber. A sensitivity analysis is presented and most important instability modes are identified. Copyright}}, author = {{Duwig, Christophe and Gherman, Bogdan, George and Mihaescu, Mihai and Salewski, Mirko and Fuchs, Laszlo}}, booktitle = {{Proceedings of the ASME Turbo Expo}}, keywords = {{Electricity demand growth; Mach number; Thermo-acoustic waves}}, language = {{eng}}, pages = {{67--75}}, publisher = {{American Society Of Mechanical Engineers (ASME)}}, title = {{Numerical study of thermo-acoustic waves generation by a swirling flame using a new approach based on large eddy simulation}}, volume = {{2}}, year = {{2005}}, }