Simulation of Soot Size Distribution in a Counterflow Flame
-
Z. He
,
K. Zhou
Abstract
Soot formed during the rich combustion of fossil fuels is an undesirable pollutant and health hazard. A newly developed Monte Carlo method is used to simulate the soot formation in a counterflow diffusion flame of ethylene. The simulation uses a new reaction mechanism available in literature, which focuses on modeling the formation of large polycyclic aromatic hydrocarbons (PAHs) up to coronene (C24H12). Nascent soot particles are assumed to form from the collision of eight different PAH molecules. Soot surface growth includes the hydrogen-abstraction-C2H2-addition mechanism and the condensation of the PAHs. Soot coagulation is in the free-molecular regime because particles are small (not more than a hundred nanometer). The coupling between vapor consumption and soot formation is handled by an interpolative moment method. Soot particle diffusion is found negligible throughout the counterflow flame, except for a very narrow region right around the stagnation plane. The soot particle size distribution (PSD) generally exhibits a bimodal shape. The first peak corresponds to a large number of nascent particles, while the second peak results from the competition between nucleation and coagulation. Surface growth affects the PSD quantitatively, but does not change the modality. A comparison with experimental data is also provided.
Funding statement: Research Funding: This work was supported by the National Natural Science Foundation of China (Grant/Award Number: 11402179, 51404176) and the National Key Technology R&D Program of China (2011BAK06B02).
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Articles in the same Issue
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Articles in the same Issue
- Frontmatter
- A Novel Catalyst Preparation Technique to Improve Performance of Ni/γ-Al2O3 Catalysts in Partial Oxidation of Methane
- Characterization and Deactivation Study of Mixed Vanadium and Potassium Oxide Supported on Microemulsion-Mediated Titania Nanoparticles as Catalyst in Oxidative Dehydrogenation of Propane
- Effect of Titania Loading on Properties and Catalytic Activity of Nanostructured Phosphate–Vanadia-Impregnated Silica–Titania Oxidative–Acidic Bifunctional Catalyst
- Effects of Partial Slip on Chemically Reactive Solute Distribution in MHD Boundary Layer Stagnation Point Flow Past a Stretching Permeable Sheet
- Heat and Mass Transfer of Thermophoretic MHD Flow of Powell–Eyring Fluid over a Vertical Stretching Sheet in the Presence of Chemical Reaction and Joule Heating
- Integration of Optimization and Model Predictive Control of an Intensified Continuous Three-Phase Catalytic Reactor
- Kinetics of Reactive Extraction of Pyruvic Acid Using Tributylamine Dissolved in n-Butyl Acetate
- Mathematical Modeling, Verification and Optimization for Catalytic Membrane Esterification Micro-reactor
- Metal-Foam-Supported Pd/Al2O3 Catalysts for Catalytic Combustion of Methane: Effect of Interaction between Support and Catalyst
- Simulation of Soot Size Distribution in a Counterflow Flame
- Study on Effective Radial Thermal Conductivity of Gas Flow through a Methanol Reactor
- Surface Functionalization and Magnetic Motion of Hydrophobic Magnetic Nanoparticles with Different Sizes
- Towards Production of γ-valerolactone via Hydrogenation of Aqueous Levulinic Acid
- Nitrogen Removal to Minimize Energy Consumption of the Two WWTPs Choutrana II and Menzel Bourguiba in Tunisia
