Numerical analyses of laminar flames propagating in droplet mists using detailed and tabulated chemistry
| Autor: | Laurentius P.H. de Goey, Johannes Janicka, Jeroen A. van Oijen, N Nico Speelman, Fernando Luiz Sacomano Filho, Amsini Sadiki |
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| Přispěvatelé: | Power & Flow, Group De Goey, Group Van Oijen |
| Rok vydání: | 2018 |
| Předmět: |
Differential diffusion
Turbulence 020209 energy General Chemical Engineering General Physics and Astronomy Energy Engineering and Power Technology detailed chemistry Laminar flow 02 engineering and technology General Chemistry Mechanics Combustion 01 natural sciences 010305 fluids & plasmas Fuel Technology Modeling and Simulation Flame propagation spray combustion 0103 physical sciences 0202 electrical engineering electronic engineering information engineering flamelet generated manifold tabulated chemistry Evaporative cooler Flammability limit |
| Zdroj: | Combustion Theory and Modelling, 22(5), 998-1032. Taylor and Francis Ltd. |
| ISSN: | 1741-3559 1364-7830 |
| DOI: | 10.1080/13647830.2018.1470332 |
| Popis: | Numerical analyses of laminar flames propagating in mono-dispersed quiescent droplet mists are addressed. Attention has been given to the evolution of combustion reactions interacting with different mists and the assessment of chemistry simplifications. In the first part, investigations are exclusively performed in a detailed description of the chemistry. Focus is concentrated on simplifications typically assumed in simulations of turbulent spray combustion. Namely, evaporative cooling and differential diffusion. These phenomena are systematically studied together with the characteristics of the observed flammability limits. In the second part, simulations conducted with the flamelet generated manifold (FGM) method are compared with detailed chemistry results. Flame propagation speed and profiles of selected quantities are used. Results demonstrate to what extent common simplifications applied to turbulent spray combustion, as well as FGM tables constructed with single-phase flamelets, are suitable for representing spray flame characteristics. |
| Databáze: | OpenAIRE |
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