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Numerical simulation of a steady hollow-cone methanol spray flame within an annular air jet SCIE SCOPUS

Title
Numerical simulation of a steady hollow-cone methanol spray flame within an annular air jet
Authors
Kim, WTHuh, KYFriedman, JARenksizbulut, M
Date Issued
2001-01
Publisher
TAYLOR & FRANCIS LTD
Abstract
Numerical simulations are performed to investigate a reacting steady hollow-cone methanol spray interacting with an annular air jet. Eulerian conservation equations are solved for gas flow while a stochastic Lagrangian method is used for sprays in KIVA-3 (Amsden 1993). Initial conditions for injected droplet parcels are sampled stochastically from the distribution functions based on measured liquid volume flux and Sauter mean diameter. Coupling between turbulent flow and chemistry is treated by the conserved scalar approach with a beta function probability density function for the mixture fraction. Mean gas temperature, OH concentration. Sauter mean diameter, and liquid volume flux are in reasonable agreement with measurements for three different air flow rates. It is shown that the annular air jet tends to deflect droplets toward the axis, providing a narrower and shorter reaction zone suitable for a more compact combustion chamber, Discrepancy for the no air jet case is attributed to the isotropic turbulent dispersion model for droplet-eddy interaction, Other possible reasons may he the k-e model for gas flow, improper input conditions for injected droplet parcels. and inaccurate correlations for exchange of mass, momentum. and energy between droplets and gas.
Keywords
annular air jet; combustion; numerical simulation; spray; LASER-INDUCED-FLUORESCENCE; PARTICLE DISPERSION; TURBULENT; DROPLET; FLOWS; COMBUSTION; MODEL; OH
URI
https://oasis.postech.ac.kr/handle/2014.oak/19140
DOI
10.1080/00102200108907861
ISSN
0010-2202
Article Type
Article
Citation
COMBUSTION SCIENCE AND TECHNOLOGY, vol. 171, page. 119 - 139, 2001-01
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허강열HUH, KANG YUL
Dept of Mechanical Enginrg
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