Title:
Particle Vaporization Velocimetry and Quantitative Soot Concentration Measurement in Sooty Flows

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dc.contributor.advisor Seitzman, Jerry M.
dc.contributor.author Yang, Ping en_US
dc.contributor.committeeMember Jagoda, Jechiel I.
dc.contributor.committeeMember Menon, Suresh
dc.contributor.committeeMember Mulholland, James
dc.contributor.committeeMember Zinn, Ben T.
dc.contributor.department Aerospace Engineering en_US
dc.date.accessioned 2008-02-07T18:48:43Z
dc.date.available 2008-02-07T18:48:43Z
dc.date.issued 2007-11-15 en_US
dc.description.abstract Soot is a combustion generated pollutant that is both a direct risk to human health and a contributing source to global environmental change. Soot can also be a controlling factor in heat transfer inside combustion systems. Thus there is a growing interest in being able to measure soot and understand its production in practical, turbulent combustion environments. Therefore, the specific objectives of this research work were: (1) developing a way to measure velocity of sooty regions that is compatible with existing methods for measuring temporally and spatially resolved soot concentration fields and (2) using these methods to make quantitative measurements of soot in an unsteady, turbulent-like combustor. The Particle Vaporization Velocimetry (PVV) technique was developed and is compatible with Laser Induced Incandescence (LII), a soot concentration measurement approach. PVV is a flow tagging approach, where a high intensity laser (~2-3 J/cm2) is used to vaporize a small region in the soot field. This approach was demonstrated to produce a long lasting and easily readable flow tag that allows for velocity measurements over a wide range of velocities. LII proved to be the best method for detection the motion of the tag after a fixed delay. PVV and LII were used to measure velocity and two-dimensional soot concentration fields in an acoustically excited burner. In addition, images of soot luminosity were obtained. Both laminar and transitional acetylene diffusion flames were studied. The results reveal that strong acoustic forcing can significantly reduce total flame soot, as well as maximum soot concentrations, while simultaneously increasing the average soot temperature. The influence of acoustically generated vortices on soot formation was studied, and soot and products mixture mostly likely dominant high soot concentration regions. Eventually, these mixtures will be propagated downstream and oxidized as a diffusion flame. en_US
dc.description.degree Ph.D. en_US
dc.identifier.uri http://hdl.handle.net/1853/19843
dc.publisher Georgia Institute of Technology en_US
dc.subject Soot en_US
dc.subject Particle en_US
dc.subject PVV en_US
dc.subject LII en_US
dc.subject Laser en_US
dc.subject.lcsh Combustion engineering
dc.subject.lcsh Soot
dc.title Particle Vaporization Velocimetry and Quantitative Soot Concentration Measurement in Sooty Flows en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Seitzman, Jerry M.
local.contributor.corporatename College of Engineering
local.contributor.corporatename Daniel Guggenheim School of Aerospace Engineering
local.relation.ispartofseries Doctor of Philosophy with a Major in Aerospace Engineering
relation.isAdvisorOfPublication a312077b-cd16-4664-ad12-3a719b7f798a
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
relation.isOrgUnitOfPublication a348b767-ea7e-4789-af1f-1f1d5925fb65
relation.isSeriesOfPublication f6a932db-1cde-43b5-bcab-bf573da55ed6
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