Date of Award

1-1-2012

Language

English

Document Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

College/School/Department

Department of Atmospheric and Environmental Sciences

Content Description

1 online resource (xvii, 238 pages) : illustrations (some color)

Dissertation/Thesis Chair

Fangqun Yu

Committee Members

Robert G Keesee, James Schwab, Chris Walcek

Keywords

Aerosol, Aircraft engine, Combustion, Diesel engine, Numerical modeling, Soot, Airplanes, Automobiles, Aircraft exhaust emissions, Diesel motor exhaust gas, Mathematical models

Subject Categories

Atmospheric Sciences | Automotive Engineering | Environmental Sciences

Abstract

Combustion emission of soot and pollutant gas species contributes to poor regional air quality near emission sources and to climate change. It is important to understand the formation mechanism and time evolution of these pollutants inside the combustion engine, through detailed modeling of combustion chemistry and microphysics as well as comparison with observation. In this thesis, two multi-zone gas parcel combustion engine models, one for aircraft engines and another for diesel engines, have been developed to study soot size distribution evolution and pollutant formation inside the engines as well as emissions. The models take into account size-resolved (sectional) soot aerosol dynamics (nucleation, growth, and coagulation) and detailed combustion chemistry of jet and diesel fuel.

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