Methane swirl-stabilized lean burn flames: assessment of scale-resolving simulations
| Autor: | Daniele Pampaloni, Davide Bertini, Lorenzo Mazzei, Antonio Andreini, Stefano Puggelli |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
business.industry 020209 energy Flow (psychology) Mechanical engineering 02 engineering and technology Mechanics Computational fluid dynamics Combustion 01 natural sciences Methane 010305 fluids & plasmas chemistry.chemical_compound chemistry Natural gas 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Combustor business Reynolds-averaged Navier–Stokes equations Lean burn |
| Zdroj: | Energy Procedia. 126:834-841 |
| ISSN: | 1876-6102 |
| Popis: | The reliable prediction of the turbulent combustion process in lean flames is of paramount importance in the design of gas turbine combustors. The present work presents an assessment of the capabilities of Flamelet Generated Manifold (FGM) in the framework of Reynolds-Averaged Navier-Stokes (RANS) and Large-Eddy Simulation (LES) At this purpose the TECFLAM swirl burner consisting of a strongly swirling, unconfined natural gas flame was chosen. Results highlight that RANS-FGM succeeds in predicting the main characteristics of the reacting flow field and species concentrations. However, only LES is capable of reproducing the actual turbulent mixing between swirling flow and co-flow, thus leading to appreciable enhancements with respect to RANS results. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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