Results 181 to 190 of about 1,079,064 (218)

Measurement of the soot concentration and soot particle sizes in propane oxygen flames

Symposium (International) on Combustion, 1981
Soot concentrations and particle sizes were measured by light scattering and probe measurements in the burnt gas region of atmospheric pressure propane-oxygen flames and propane-oxygen flames to which hydrogen or ammonia were added. The results show that the soot concentrations in propane-oxygen flames, to which hydrogen is added are lower compared to ...
H. Bockhorn, F. Fetting, U. Meyer, R. Reck, G. Wannemacher   +4 more
openaire   +1 more source

Mapping of Soot Particles in a Weakly Sooting Diffusion Flame by Aerosol Techniques

Combustion and Flame, 1998
The evolution of detailed particle size distributions has been measured along the centerline of an axisymmetric diffusion flame of CH4 + Ar burning in air at 1 atm. Soot particles with mean diameters of 3–18 nm were observed. Changes in the size distribution exhibited zones where either nucleation, coagulation, or destruction of soot particles ...
H Hepp, K Siegmann
openaire   +1 more source

Characterization of soot and crystalline atmospheric ultrafine particles

Environmental Pollution
The extraction and characterization of atmospheric ultrafine particles (UFPs) is critical to understanding environmental health and climate dynamics. This study uses an aqueous extraction method to characterize the size distribution, shape, and composition of atmospheric UFPs.
Francisco Berrellez-Reyes, Benedetto Schiavo, Belem Gonzalez-Grijalva, Aracely Angulo-Molina, Diana Meza-Figueroa   +4 more
openaire   +2 more sources

Controlling Fractal Diffusion of Differently-Sized Soot Particles

International Journal of Bifurcation and Chaos, 2018
Fractal diffusion of soot particles is widespread in nature. We propose a mathematical model of interference control for diffusion systems of differently-sized soot particles that can be used to predict and control fractal diffusion. The effect of the source of the interference on diffusion is investigated by analyzing the numerical relationship ...
Jie Sun, Wei Qiao, Shuai Liu
openaire   +2 more sources

Electrophoretic Aerosol focusing for Soot Particle Analysis

2015
In this work, a focused deposition technique was developed and applied to soot particles produced in a laminar premixed flame of ethylene and air. Particles were collected by means of an Electrostatic Precipitator (ESP), coupled with a Corona charger device used for unipolar charging of particles.
G Trunfio, G De Falco, M Commodo, P Minutolo, A D'Anna   +4 more
openaire   +2 more sources

Optical diagnostic for soot particles

2015
Yes
Yon, Jerôme, Coppalle, A., Talbaut, M., Bescond, A., Valencia, A., Hebert, D.   +5 more
openaire   +1 more source

Aromatic site description of soot particles

Combustion and Flame, 2008
Abstract A new, advanced soot particle model is developed that describes soot particles by their aromatic structure, including functional site descriptions and a detailed surface chemistry mechanism. A methodology is presented for the description of polyaromatic hydrocarbon (PAH) structures by their functional sites.
Matthew Celnik, Abhijeet Raj, Richard West, Robert Patterson, Markus Kraft   +4 more
openaire   +1 more source

Pre-Particle Chemistry in Soot Formation

1981
Species and reactions involved in the early stages of soot formation prior to the formation of particles have been studied in flat low pressure flames of benzene using a molecular beam mass spectrometer system. In a near-sooting (equivalence ratio φ = 1.8) benzene-oxygen-argon flame, the profiles of molar flux versus distance from the burner for ...
J. D. Bittner, J. B. Howard
openaire   +1 more source

Optical Measurements of Soot Particles in Flames

MRS Proceedings, 1988
AbstractThe formation and growth of soot particles in combustion systems represents an area of significant research interest. Critical to progress in this area has been the development of suitable optical diagnostic techniques. Principal among these has been the utilization of laser light scattering techniques to obtain particle size and concentration ...
openaire   +1 more source

On surface growth mechanism of soot particles

Symposium (International) on Combustion, 1996
A sterically resolved kinetic Monte Carlo technique was applied to model surface growth of soot particles under conditions typical of flame environments. The employed elementary surface reaction mechanism was based on analogous reactions of gaseous aromatic species.
openaire   +1 more source