Topic
Diffusion flame
About: Diffusion flame is a research topic. Over the lifetime, 9266 publications have been published within this topic receiving 233522 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: The formation of nanoparticles in laboratory hydrocarbon flames is reviewed in terms of particle morphology, chemical composition, and health hazards as mentioned in this paper, and the nascent nanoparticles are distinguished by their occurrence as singlet particles that form translucent images in transmission electron microscopy (TEM).
Abstract: The formation of nanoparticles in laboratory hydrocarbon flames is reviewed in terms of particle morphology, chemical composition, and health hazards. The nascent nanoparticles in the nucleation mode have been widely reported in diverse laboratory flames, and are distinguished by their occurrence as singlet particles that form translucent images in transmission electron microscopy (TEM). Their sizes range from about 10 nm or more down to 2 to 3 nm, the limit of resolution of the TEM, and they possess a liquid-like quality. These particles are widely considered to be the precursor stage to the more readily observed carbonaceous aggregates consisting of chained primary particles that are opaque to the electron beam of the TEM. Nanoparticles sampled from the inverse diffusion flame and the particle effluent from diesel engines show a strong resemblance by GCMS analysis, and they contain many of the stabilomer PAHs and their isomers in the 200 to 302 atomic mass range. Many of these chemical species have high...
101 citations
TL;DR: In this paper, a detailed chemical kinetic model for iso-pentanol oxidation was developed including high and low-temperature chemistry for a better understanding of the combustion characteristics of higher alcohols.
101 citations
TL;DR: In this article, the morphology of soot collected from a laminar acetylene/air diffusion flame was studied, and the same fractal morphology was found with a fractal dimension of D = 1.8 and within a rather large uncertainty, the same prefactor k 0=1.7.
Abstract: The morphology of soot collected from a laminar acetylene/air diffusion flame was studied. Collection methods included both thermophoretic and impaction sampling from both the luminous and nonluminous portions of the flow. The soot was viewed with both electron and optical microscopy. Cluster sizes ranged over four orders of magnitude from 50 nm to 400 yam to include some clusters visible to the naked eye. A new method of micrograph analysis, necessary when the clusters were large, was developed to account for the unresolved primary particles. Over this entire size range, the same fractal morphology was found with a fractal dimension of D = 1.8 and, within a rather large uncertainty, the same prefactor k0=1.7. Thus, the fractal morphology of soot remains constant from clusters of about 10 primary particles per aggregate to macroscopic clusters of over 108 primary particles.
101 citations
TL;DR: In this article, the authors measured the burning velocity in the central stream-tube of a button-shaped flame with the particle track method and compared it with data from cone-shaped flames.
101 citations
TL;DR: In this article, the authors compare the performance of nine widely applied total emissivity models for H2O-CO2 homogeneous mixtures compared with the exponential wide band model (EWBM) calculations.
101 citations