Atomization and combustion of a gelled, metallized slurry fuel
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Authors
Urbon, Bruce Charles
Subjects
Atomization
Boron slurry
Slurry
Combustion
Ultrasonic atomizer
Airblast atomizer
Boron slurry
Slurry
Combustion
Ultrasonic atomizer
Airblast atomizer
Advisors
Netzer, David Willis
Date of Issue
1992-12
Date
1992-Dec
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
Two commercially available atomizers were tested for their ability to atomize a gelled boron slurry fuel. Particle size distributions were measured in non-reacting flow using a Malvern 2600 HSD Laser Diffraction Particle Sizer. A sub-scale ramjet combustor was designed and fabricated which utilized a sudden expansion inlet dump together with inlet air swirl for flame stabilization. An airblast atomizer produced sufficiently small particles for good combustion, but at the cost of a high pressure drop across the atomizer, making it impractical for use in a slurry fueled ramjet. Sustained steady combination of the slurry fuel was not achieved using the airblast atomizer. A whistle type ultrasonic atomizer als produced sufficiently small particles and at a much lower pressure drop across the atomizer. Sustained stable combustion was achieved using the ultrasonic atomizer which yielded a combustion efficiency of 76% at 96 psia and an equivalence ratio of 0.78.
Type
Thesis
Description
Series/Report No
Department
Department of Aeronautics and Astronautics
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funding
Format
25 p.;28 cm.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
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.