Experimental and Detailed Numerical Studies of Fundamental Flame Properties of Gaseous and Liquid Fuels
Abstract
The dynamic behavior of laminar flames was studied for a wide range of conditions. The parameters considered included the fuel type, reactant composition, flame temperature, and combustion mode. The derived experimental data constitute a basis for partially validating the combustion chemistry for fuels ranging from hydrogen to gaseous and liquid hydrocarbons and alcohols. Emphasis was given to kinetics regimes that have not been systematically probed and/or in which current knowledge of combustion chemistry appears to be inadequate. The phenomena of ignition, propagation, and extinction were studied experimentally in the counterflow configuration. The experiments were modeled through the use of a quasi one-dimensional code and included detailed description of chemical kinetics and molecular transport. The results of this research showed that state of the art kinetics models have notable limitations in predicting flame properties even for simple molecules such as H2 and C1-C2 hydrocarbons, with these limitations being more profound for the more complex liquid hydrocarbons. It was also found that for 112 flames, uncertainties in diffusion coefficient calculations could have a greater effect on the predicted flame properties compared to kinetics.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 2003
- Accession Number
- ADA420935
Entities
People
- Fokion N. Egolfopoulos
Organizations
- University of Southern California