<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "C1-C4 Hydrocarbon Oxidation Mechanism"^^ . "Detailed mechanisms with hundreds of elementary reactions and species are now available for the combustion of alkanes as a result of the consistent pursuit of mechanism development over several decades. The chemical reaction scheme presented in this work was developed on the basis of a previously available one, V. Karbach (2006), and includes the oxidation reactions of high-temperature combustion of H2, CO, CH4, C2H6, C3H8 and C4H10. The mechanism consists of 412 elementary reactions and 61 species and is based on a rate-data compilation by Baulch et al. (2005). It is documented by Heghes et al. (2005) and Warnatz and Heghe¸s (2006). The approximate temperature range is from 900K to 2500K. To test the validity of the mechanism, for each fuel considered, premixed laminar flame velocities and ignition delay times have been calculated. The results were compared to experiments for the largest possible conditions range (initial temperature, pressure, equivalence ratio). The flame velocity is a function of fuel concentration, temperature and pressure of the unburnt mixture. The flame calculations are performed using the Mixfla code (J. Warnatz, Ber. Bunsenges. Phys. Chem. 82, 1978). The flame modelling was used for two purposes: to test the validity of experimental methods and to calculate flame velocities for comparison to experimental results. The ignition delay time is a characteristic quantity of the fuel and also depends on initial temperature, pressure and mixture composition. Homogenous simulations were performed using the code Homrea (U.Mass, Dissertation, University Heidelberg, 1988). Calculation of the dependence of the ignition delay time on temperature and reactant composition provides a powerful tool for modelling and understanding the combustion mechanism of a given fuel, in special at lower temperatures. It is known that the rates of elementary reactions in combustion processes differ greatly. For sensitive reactions, values for the rate coefficients have to be well-known. Sensitivity analysis has been performed in order to identify the rate-limiting reactions and to understand the behavior of the chemical system under different conditions. Furthermore, reaction flow analysis has been conducted to elucidate the important chemical pathways over a wide range of conditions. To demonstrate the capabilities of the mechanism proposed in this work, a comparison between experimental data and simulations of flame velocities and ignition delay times is presented. In summary, a detailed kinetic mechanism has been developed to simulate the oxidation of hydrocarbons up to C4 species under high-temperature conditions. The calculated ignition delay times and flame velocities are in a good agreement with experimental data for all hydrocarbon fuels studied in this work, except for the ignition delay time in case of acetylene, where our calculations show shorter ignition delay time at comparable conditions."^^ . "2007" . . . . . . . . "Crina I."^^ . "Heghes"^^ . "Crina I. Heghes"^^ . . . . . . "C1-C4 Hydrocarbon Oxidation Mechanism (PDF)"^^ . . . "diss.pdf"^^ . . . "C1-C4 Hydrocarbon Oxidation Mechanism (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "C1-C4 Hydrocarbon Oxidation Mechanism (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "C1-C4 Hydrocarbon Oxidation Mechanism (Other)"^^ . . . . . . "preview.jpg"^^ . . . "C1-C4 Hydrocarbon Oxidation Mechanism (Other)"^^ . . . . . . "medium.jpg"^^ . . . "C1-C4 Hydrocarbon Oxidation Mechanism (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #7379 \n\nC1-C4 Hydrocarbon Oxidation Mechanism\n\n" . "text/html" . . . "540 Chemie"@de . "540 Chemistry and allied sciences"@en . .