Aluri, Naresh Kumar: Numerical modelling of turbulent premixed combustion for gas turbine conditions with incorporation of molecular transport effectsNumerische Modellierung turbulenter Vormischverbrennung bei Gasturbinenbedingungen unter Einbeziehung molekularer Transporteffekte. 2007
Inhalt
- Acknowledgments
- The thesis was financially supported in the major parts within the Bavarian research project FORTVER (Forschungsverbund Turbulente Verbrennung), hosted from the Arbeitsgemeinschaft Bayerischer Forschungsverbünde (abayfor). Some part was funded by ALSTOM, the last months financial support was given from the University of Siegen. I am very thankful for all these supports.
- Table of Contents
- Abstract
- Zusammenfassung
- List of Figures
- List of Tables
- Nomenclature
- 1. Introduction
- 2. Description of Turbulent Reaction Flows
- 2.1 Turbulence
- 2.2 Turbulence Models
- 2.3 Principles of Combustion
- 3. Turbulent Premixed Flames
- 3.1 Regime Diagram of Premixed Turbulent Combustion
- 3.2 Reaction Progress Variable Approach
- 3.3 Reaction Modelling Approaches
- 4. Molecular Transport Effects and Dynamics of Premixed Flames
- 4.1 Importance of Lewis Number in Premixed Combustion
- 4.2 Preferential Diffusion Effects
- 4.3 High Pressure Effects
- 4.4 Dynamics of Swirl Flames
- 5. LES Quality Assessment Methods
- 6. Experimental Details of the Simulated Geometries
- 6.1 Bunsen Flame Data of Kobayashi et al
- 6.2 Sudden Expansion Dump Combustor
- 6.3 ALSTOM Gas Turbine Burners
- 6.4 Orleans Bunsen Flame Data
- 6.4.1 Details of the experimental configuration
- 6.4.2 Mie scattering tomography
- 6.4.3 Rayleigh scattering
- 6.5 Simulation Matrix
- 7. Model Development and Implementation to LES
- 7.1 Predictions of Various Reaction Models in the RANS Context
- 7.2 Extended Lindstedt-Váos (ELV) Reaction Model
- 7.3 Algebraic Flame Surface Wrinkling (ASFW) Model
- 7.4 Implementation of the AFSW Model to LES
- 8. Model Predictions on a Dump Combustor with RANS and LES Approaches
- 8.1 Cold Flow RANS Simulations
- 8.2 Predictions of the AFSW Reaction Model in RANS Approach
- 8.3 Cold Flow LES
- 8.4 Reacting Flow LES
- 9. Model Predictions on Gas Turbine Burners in RANS and LES Approaches
- 9.1 Reacting Flow Simulations on F-3 Configuration with RANS Approach
- 9.2 Illustrating the Substrative Influence of the Lewis Number
- 9.3 Dynamics of Flame Propagation in Swirling Flows
- 9.4 Physical Description of the F-4 Configuration
- 9.5 Experimental Observations
- 9.6 Simulation Results on F-4 Configuration
- 9.6.1 Cold flow RANS simulations
- 9.6.2 Reacting RANS simulations
- 9.6.3 Cold flow LES
- 9.6.4 Reacting LES
- 9.7 Dynamics of Dual Flame Mode
- 10. Hydrogen Doped Methane – Air Flames – A Preliminary Study
- 11. Summary and Discussion
- Bibliography
- Appendix: A