Publication:
Development of a spherical combustion chamber for measuring laminar flame speeds in Navy bulk fuels and biofuel blends

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Authors
Buckley, Omari D.
Subjects
Laminar Flame Speed
Spherical Flame Method
F-76
JP-5
Bio-Derived Fuels;
Advisors
Millsaps, Omari D.
Brophy, Christopher M.
Date of Issue
2011-12
Date
December 2011
Publisher
Monterey, California. Naval Postgraduate School
Language
Abstract
This thesis presents the results of an experimental study to determine laminar flame speeds using the spherical flame method. An experimental combustion chamber, based on the constant-volume bomb method, was designed, built, and instrumented to conduct these experiments. Premixed Ethylene/air mixtures at a pressure of 2 atm, temperature of 298ᆱ 5K and equivalence ratios ranging from 0.8 to 1.5 were ignited and using a high speed video Schlieren system images were taken to measure the laminar flame speed in the expanding spherical flame front. The results were compared against published data for ethylene/air mixtures which yielded agreement within 5%. An attempt was made to measure the laminar flame speed for F-76 at a pressure of 5 atm and temperature of 500K; however, premixed conditions were unable to be met due to auto-ignition and vapor characteristics of F-76. Suggestions for future work provide a potential solution and improvement to the current design.
Type
Description
Series/Report No
Department
Mechanical and Aerospace Engineering (MAE)
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
xvi, 65 p. : chiefly col. ill. ; 28 cm.
Citation
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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