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Some Effects of Air and Fuel Oil Temperatures on Spray Penetration and DispersionPresented here are experimental results obtained from a brief investigation of the appearance, penetration, and dispersion of oil sprays injected into a chamber of highly heated air at atmospheric pressure. The development of single sprays injected into a chamber containing air at room temperature and at high temperature was recorded by spray photography equipment. A comparison of spray records showed that with the air at the higher temperature, the spray assumed the appearance of thin, transparent cloud, the greatest part of which rapidly disappeared from view. With the chamber air at room temperature, a compact spray with an opaque core was obtained. Measurements of the records showed a decrease in penetration and an increase in the dispersion of the spray injected into the heated air. No ignition of the fuel injected was observed or recorded until the spray particles came in contact with the much hotter walls of the chamber about 0.3 second after the start of injection.
Document ID
19930081162
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Gelalles, A G
Date Acquired
September 6, 2013
Publication Date
May 1, 1930
Report/Patent Number
NACA-TN-338
Accession Number
93R10452
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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