| Autor: |
Thomas Komarek, Luis Tay Wo Chong, Wolfgang Polifke, Roman Keppeler, Michael Pfitzner |
| Rok vydání: |
2012 |
| Předmět: |
|
| Zdroj: |
Volume 2: Combustion, Fuels and Emissions, Parts A and B. |
| Popis: |
In technically relevant combustion devices, combustion can take place in the vicinity of walls which can significantly affect the reaction and the heat transfer. However, only few studies focus on modelling of flame-wall interaction (FWI) for algebraic combustion models and virtually none consider FWI for algebraic Large Eddy Simulation combustion models. In the present work heat loss models, as previously published in the literature, are employed to extend a LES algebraic combustion model. The performance of the FWI models is evaluated by simulations of a nonadiabatic swirl flame. The simulation results are compared with experimental data of velocity field and heat release. The extent of the quenching zone and heat loss effects are determined in the simulations and compared with data from direct numerical simulations. Comparison of simulation and experimental data shows a significant improvement when heat loss effects are incorporated. Also the characteristic Peclet numbers are correctly predicted by FWI models.Copyright © 2012 by ASME |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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