Graduate Thesis Or Dissertation

 

Analysis of the Effects of Combustion Products on Forced Ignition and Turbulent Flame Propagation Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/pg15bn42m

Descriptions

Attribute NameValues
Creator
Abstract
  • Practical combustion devices frequently rely upon forced ignition of turbulent fuel/oxidizer mixtures that also contain the product species of combustion. Examples of this include engines that use exhaust gas recirculation (EGR), inter-turbine burners in aircraft engines, and other systems the utilize staged combustion. In this work, the effects of major combustion product species (i.e., N2, CO2, H2O, and NO) on forced ignition of CH4/air mixtures were identified and quantified. Additionally, turbulent flame speed measurements of premixed, jet-A/air mixtures were obtained with and without dilution with the same species. The equivalence ratios, adiabatic flame temperatures, and concentrations of individual diluents in mixtures were systematically changed to highlight the effects of changes in mixture composition, kinetics, and radiation heat loss. Addition of N2, CO2, and H2O to the unburned mixture was found to reduce the probability of forced ignition in CH4/air mixtures, the growth rate of ignition kernels, and the turbulent flame speed of jet-A/air mixtures. Dilution with N2 had the smallest effect on all parameters, and dilution with CO2 had the largest effect. Laminar flame calculations were used to provide insight into the changes in chemistry induced by particular diluent species, and the ways in which these changes impact forced ignition and turbulent flame propagation.
Contributor
License
Resource Type
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Rights Statement
Funding Statement (additional comments about funding)
  • This work was supported by the Office of Naval Research (contract N000141612429) and AFOSR
Publisher
Peer Reviewed
Language

Relationships

Parents:

This work has no parents.

In Collection:

Items