Soot formation characteristics of n -heptane/toluene mixtures in laminar premixed burner-stabilized stagnation flames

The soot formation characteristics in laminar premixed flames of pure n-heptane and binary mixtures of toluene and n-heptane with liquid volume ratios ranging from 0.2 to 1 were studied with the C/O ratio and unburned gas-mixture velocity being kept the same for all tested flames. The particle size distribution functions (PSDFs) at several selected burner-to-stagnation surface separation distances (Hp) were measured by using the burner-stabilized stagnation probe/scanning mobility particle sizer (SMPS) technique. In addition, the morphology of soot particles sampled from the probe was examined using transmission electron microscopy (TEM). From the PSDFs at different Hp and TEM images, it was observed that with the addition of toluene, soot inception occurred at lower flame heights and the primary particle size of soot aggregates was significantly reduced. A combustion kinetics model for toluene and n-heptane was used to explore the precursor chemistry. The modeling results were found to be consistent with the observations of the measured PSDFs.

A chemical kinetic mechanism for the low- and intermediate-temperature combustion of Polyoxymethylene Dimethyl Ether 3 (PODE 3 )

Utilization of generalized energy-based fragmentation method on the study of hydrogen abstraction reactions of large methyl esters

Reaction kinetics of hydrogen abstraction from polycyclic aromatic hydrocarbons by H atoms

We studied how the PAH structure, site, and size affect the rate constants of hydrogen abstraction reactions of PAH systematically.

Kinetics and branching fractions of the hydrogen abstraction reaction from methyl butenoates by H atoms

We studied hydrogen abstraction reactions at various sites of unsaturated methyl esters by H atoms, including variational effects, tunneling and multi-structural torsional anharmonicity.

Experimental Investigation on the Evaporation and Combustion Processes of Ammonium-Dinitramide-Based Liquid Propellant

Obtaining effective rate coefficients to describe the decomposition kinetics of the corannulene oxyradical at high temperatures

This work analyzes the effect of overlapping eigenvalues on the high-temperature kinetics of a large oxyradical based on master equation solutions.

Nascent soot particle size distributions down to 1 nm from a laminar premixed burner-stabilized stagnation ethylene flame

Experimental and numerical studies of ammonium dinitramide based liquid propellant combustion in space thruster

An adaptive distance-based group contribution method for thermodynamic property prediction

A new distance-based group contribution method that describes intramolecular interactions systematically is developed to calculate thermodynamic properties accurately and efficiently.

Effects of CO 2 addition on the evolution of particle size distribution functions in premixed ethylene flame

Benchmark Calculations for Bond Dissociation Enthalpies of Unsaturated Methyl Esters and the Bond Dissociation Enthalpies of Methyl Linolenate

Role of Carbon-Addition and Hydrogen-Migration Reactions in Soot Surface Growth

Theoretical Analysis of the Effect of C═C Double Bonds on the Low-Temperature Reactivity of Alkenylperoxy Radicals

Thermal decomposition of graphene oxyradicals under the influence of an embedded five-membered ring

In this study, we examined the influence of an embedded five-membered ring on the thermal decomposition of graphene oxyradicals.

Mobility size and mass of nascent soot particles in a benchmark premixed ethylene flame

Uncertainty analysis of the kinetic model prediction for high-pressure H 2 /CO combustion

Role of Spin-Triplet Polycyclic Aromatic Hydrocarbons in Soot Surface Growth

Dimerization of Polycyclic Aromatic Hydrocarbons in Soot Nucleation

Thermal decomposition of graphene armchair oxyradicals

Thermal Decomposition of Pentacene Oxyradicals

Process informatics tools for predictive modeling: Hydrogen combustion

Optimization of combustion kinetic models on a feasible set

Spectral uncertainty quantification, propagation and optimization of a detailed kinetic model for ethylene combustion

Detailed and simplified kinetic models of n-dodecane oxidation: The role of fuel cracking in aliphatic hydrocarbon combustion