Views
3 years ago

soot formation in laminar diffusion flames - Yale University

soot formation in laminar diffusion flames - Yale University

soot formation in laminar diffusion flames - Yale

SOOT FORMATION IN LAMINAR DIFFUSION FLAMES M. D. Smooke, M. B. Long and B. C. Connelly Department of Mechanical Engineering Yale University New Haven, CT and M. B. Colket and R. J. Hall United Technologies Research Center East Hartford, CT Abstract Laminar, sooting, coflow diffusion flames at atmospheric pressure have been studied experimentally and theoretically as a function of fuel dilution by inert nitrogen. The flames have been investigated with laser diagnostics. Laser extinction has been used to calibrate the experimental soot volume fractions and an improved gating method has been implemented in the laser-induced incandescence (LII) measurements resulting in differences to the soot distributions reported previously. Numerical simulations have been based on a fully-coupled solution of the flow conservation equations, gas-phase species conservation equations with complex chemistry, and the dynamical equations for soot spheroid growth. The model also includes the effects of radiation reabsorption through an iterative procedure. An investigation of the computed rates of particle inception, surface growth and oxidation, along with a residence time analysis, helps explain the shift in the peak soot volume fraction from the centerline to the wings of the flame as the fuel fraction increases. The shift arises from changes in the relative importance of inception and surface growth combined with a significant increase in the residence time within the annular soot formation field leading to higher soot volume fractions, as the fuel fraction increases. *Corresponding Author: Mitchell D. Smooke Department of Mechanical Engineering Yale University P.O. Box 208284 New Haven, CT 06520-8284 (203) 432-4344 (Work) (203) 432-6775 (FAX) mitchell.smooke@yale.edu

Soot formation in laminar diffusion flames - ResearchGate
Structure Formation - Department of Astronomy, Yale University
Soot formation in high-pressure laminar methane diffusion flames
Numerical Prediction of Sooting Laminar Diffusion Flames Using ...
Soot Formation in an Ethylene Diffusion Flame
Forced Time-Varying Methane Diffusion Flame - Yale University
Radiation and soot formation in a turbulent diffusion flame - ICHMT
Modeling radiative heat transfer in sooting laminar coflow flames
Soot measurements in laminar flames of gaseous and (prevaporized ...
A simple approach of laminar soot modeling calibrated by ...
Influence of Inert Gas Dilution on Soot Formation in Laminar Non ...
computational and experimental study of laminar ... - Yale University
Soot Formation in Stabilized Swirl Flames
Effects of heat release in laminar diffusion flames - Mechanical ...
Calculating soot in a turbulent jet diffusion flame using the unsteady ...
Shapes of Buoyant and Nonbuoyant Laminar Jet Diffusion Flames
numerical simulation of laminar diffusion flames problem ... - MGNet
analytical study of a laminar diffusion flame response to ...
chapter 5 turbulent diffusion flames - FedOA
Three-Scalar Imaging in Turbulent Flames - Yale University
Inverted co-flow diffusion flame for producing soot - Superfund ...
Soot Formation in Opposed-Flow Diffusion Flames of Ethylene ...
modelling the oxidation and fragmentation of soot particles in flames
soot formation of lignin derived fuels in a laminar co-flow diffusion ...
Modeling soot formation in turbulent kerosene/air jet diffusion flames
Observables for the Response of Laminar Flames to Acoustic ...
Numerical Study of Flame Lift-off and Soot Formation in Diesel Fuel ...
Soot Diagnostics for Non-Premixed and Partial Premixed Flames
F2000A074 Soot Formation / Oxidation and Fuel-Vapor ...
Soot Formation Modeling during Hydrocarbon Pyrolysis and ...