THEORETICAL AND NUMERICAL INVESTIGATION ON FLAMELESS COMBUSTION
| Autor: | C. Bruno, C. Innarella, D. Tabacco |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Turbulence
business.industry General Chemical Engineering Nuclear engineering General Physics and Astronomy Energy Engineering and Power Technology Autoignition temperature General Chemistry Computational fluid dynamics Combustion chemistry.chemical_compound Fuel Technology chemistry Scientific method Combustor Nitrogen oxide business NOx |
| Zdroj: | Combustion Science and Technology. 174:1-35 |
| ISSN: | 1563-521X 0010-2202 |
| DOI: | 10.1080/00102200208984086 |
| Popis: | Flameless combustion has been acknowledged as one of the most interesting combustion technologies to meet both the targets of high process efficiency and low pollutant emissions. A theoretical and numerical investigation, carried out to provide a consistent physico-chemical explanation of this combustion regime, is reported here. CFD simulations of the flameless combustion WS-FLOXTM burner have been performed at ENEA to study its thermo-fluid dynamic features; detailed chemical kinetics calculations, by means of a specific zero-dimensional loop reactor model, have been performed (still in ENEA) to analyze its chemical aspects. Process temperature turns out to be the controlling factor in combustion dynamics: lean premixed conditions at lower temperatures, volumetric “flameless” combustion at higher tempera tures. This latter regime is characterized by strong interaction between kinetics and turbulence (Da ≅ 1): thermo-chemical fluctuations are respon sible for reaction zone “derealization” and no... |
| Databáze: | OpenAIRE |
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